diff --git a/.luacheckrc b/.luacheckrc
index d7f5e44..9d1b83e 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -1,4 +1,4 @@
-unused_args = false
+max_line_length = 100
 
 read_globals = {
 	"DIR_DELIM",
@@ -20,3 +20,5 @@ globals = {
 	-- mod namespace
 	"areas"
 }
+
+ignore = {"212/self"}
diff --git a/api.lua b/api.lua
index 83de26c..b8813fd 100644
--- a/api.lua
+++ b/api.lua
@@ -35,7 +35,7 @@ function areas:getAreasAtPos(pos)
 
 	if self.store then
 		local a = self.store:get_areas_for_pos(pos, false, true)
-		for store_id, store_area in pairs(a) do
+		for _, store_area in pairs(a) do
 			local id = tonumber(store_area.data)
 			res[id] = self.areas[id]
 		end
@@ -60,7 +60,7 @@ function areas:getAreasIntersectingArea(pos1, pos2)
 	if self.store then
 		local a = self.store:get_areas_in_area(pos1, pos2,
 				true, false, true)
-		for store_id, store_area in pairs(a) do
+		for _, store_area in pairs(a) do
 			local id = tonumber(store_area.data)
 			res[id] = self.areas[id]
 		end
diff --git a/chatcommands.lua b/chatcommands.lua
index bc5579a..310a540 100644
--- a/chatcommands.lua
+++ b/chatcommands.lua
@@ -74,7 +74,7 @@ minetest.register_chatcommand("set_owner", {
 
 minetest.register_chatcommand("add_owner", {
 	params = S("<ParentID>").." "..S("<PlayerName>").." "..S("<AreaName>"),
-	description = S("Give a player access to a sub-area beetween two"
+	description = S("Give a player access to a sub-area between two"
 		.." positions that have already been protected,"
 		.." Use set_owner if you don't want the parent to be set."),
 	func = function(name, param)
@@ -146,7 +146,7 @@ minetest.register_chatcommand("find_areas", {
 	params = "<regexp>",
 	description = S("Find areas using a Lua regular expression"),
 	privs = areas.adminPrivs,
-	func = function(name, param)
+	func = function(_, param)
 		if param == "" then
 			return false, S("A regular expression is required.")
 		end
@@ -160,7 +160,7 @@ minetest.register_chatcommand("find_areas", {
 		end
 
 		local matches = {}
-		for id, area in pairs(areas.areas) do
+		for id in pairs(areas.areas) do
 			local str = areas:toString(id)
 			if str:find(param) then
 				table.insert(matches, str)
@@ -181,22 +181,21 @@ minetest.register_chatcommand("find_areas", {
 
 
 minetest.register_chatcommand("list_areas", {
-	description = S("List your areas, or all areas if you are an admin."),
-	func = function(name, param)
-		minetest.log("warning", "/list_areas invoked, owner = " .. name ..
-			" AreaName = " .. param)
-
-		local admin = minetest.check_player_privs(name, areas.adminPrivs)
+	description = S("List your areas"),
+	func = function(name)
 		local areaStrings = {}
-		for id, area in pairs(areas.areas) do
-			if admin or areas:isAreaOwner(id, name) then
+		for id in pairs(areas.areas) do
+			if areas:isAreaOwner(id, name) then
 				table.insert(areaStrings, areas:toString(id))
+				if #areaStrings > 50 then
+					minetest.chat_send_player(name, S("Too many areas to list all."))
+					break
+				 end
 			end
 		end
+
 		if #areaStrings == 0 then
-			return true, S("No visible areas.")
-		elseif #areaStrings > 100 then
-			return true, S("Too many areas to list.")
+			return false, S("No visible areas.")
 		end
 
 		return true, table.concat(areaStrings, "\n")
@@ -332,7 +331,7 @@ minetest.register_chatcommand("move_area", {
 
 minetest.register_chatcommand("area_info", {
 	description = S("Get information about area configuration and usage."),
-	func = function(name, param)
+	func = function(name)
 		local lines = {}
 		local privs = minetest.get_player_privs(name)
 
@@ -373,7 +372,7 @@ minetest.register_chatcommand("area_info", {
 
 		-- Area count
 		local area_num = 0
-		for id, area in pairs(areas.areas) do
+		for _, area in pairs(areas.areas) do
 			if area.owner == name then
 				area_num = area_num + 1
 			end
@@ -418,11 +417,8 @@ minetest.register_chatcommand("areas_cleanup", {
 	func = function()
 		local total, count = 0, 0
 
-		local aareas = areas.areas
-		for id, _ in pairs(aareas) do
-			local owner = aareas[id].owner
-
-			if not areas:player_exists(owner) then
+		for id, area in pairs(areas.areas) do
+			if not areas:player_exists(area.owner) then
 				areas:remove(id)
 				count = count + 1
 			end
@@ -454,7 +450,7 @@ minetest.register_chatcommand("area_pvp", {
 	description = "Toggle PvP in an area",
 	params = "<ID>",
 	func = function(name, param)
-	local id = tonumber(param)
+		local id = tonumber(param)
 		if not id then
 			return false, S("Invalid usage, see /help @1.", "area_pvp")
 		end
@@ -470,7 +466,7 @@ minetest.register_chatcommand("area_pvp", {
 			local players = {}
 			for _, info in pairs(player_list()) do
 				local inAreas = areas:getAreasAtPos(info.pos)
-				for areaid, area in pairs(inAreas) do
+				for areaid in pairs(inAreas) do
 					if name ~= info.name and id == areaid then
 						players[#players + 1] = info.name
 					end
diff --git a/interact.lua b/interact.lua
index c302750..ef14976 100644
--- a/interact.lua
+++ b/interact.lua
@@ -3,38 +3,6 @@ local S = areas.S
 local enable_damage = minetest.settings:get_bool("enable_damage")
 
 local old_is_protected = minetest.is_protected
-
-local disallowed = {
-	["^[A-Za-z]+[0-9][0-9][0-9]"] = "You play using an unofficial client. Your actions are limited. "..
-			"Download \"MultiCraft ― Build and Mine!\" on Google Play / App Store to play ad-free!"
-}
-
-local function old_version(name)
-	local info = minetest.get_player_information(name)
-	if info and info.version_string and info.version_string < "0.4.16" then
-		return true
-	end
-end
-
--- Disable some actions for Guests
-function minetest.is_protected_action(pos, name)
-	for r, reason in pairs(disallowed) do
-		if name:lower():find(r) then
-			if old_version(name) then
-				minetest.chat_send_player(name, reason)
-				return true
-			end
-		end
-	end
-
-	if not areas:canInteract(pos, name) then
-		return true
-	end
-	return old_is_protected(pos, name)
-end
-
---==--
-
 function minetest.is_protected(pos, name)
 	if not areas:canInteract(pos, name) then
 		return true
@@ -81,9 +49,11 @@ minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch)
 		return false
 	end
 
+	local player_name = hitter:get_player_name()
+
 	-- It is possible to use cheats
 	if time_from_last_punch < 0.25 then
-		minetest.chat_send_player(hitter:get_player_name(), S("Wow, wow, take it easy!"))
+		minetest.chat_send_player(player_name, S("Wow, wow, take it easy!"))
 		return true
 	end
 
@@ -95,7 +65,7 @@ minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch)
 		return true
 	end
 	-- Do any of the areas have allowed PvP?
-	for id, area in pairs(hitterAreas) do
+	for _, area in pairs(hitterAreas) do
 		if area.canPvP then
 			hitterInPvP = true
 			break
@@ -110,7 +80,7 @@ minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch)
 			return true
 		end
 		-- Do any of the areas have allowed PvP?
-		for id, area in pairs(victimAreas) do
+		for _, area in pairs(victimAreas) do
 			if area.canPvP then
 				return false
 			end
@@ -118,6 +88,6 @@ minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch)
 	end
 
 	-- Otherwise, it doesn't do damage
-	minetest.chat_send_player(hitter:get_player_name(), S("PvP is not allowed in this area!"))
+	minetest.chat_send_player(player_name, S("PvP is not allowed in this area!"))
 	return true
 end)
diff --git a/locale/areas.ru.tr b/locale/areas.ru.tr
index c6db647..e0b6d14 100644
--- a/locale/areas.ru.tr
+++ b/locale/areas.ru.tr
@@ -24,15 +24,16 @@ Change the owner of an area using its ID=Сменить владельца зо
 Find areas using a Lua regular expression=Найти области с помощью регулярного выражения Lua
 Get information about area configuration and usage.=Получите информацию о конфигурации и использовании зоны.
 
-Give a player access to a sub-area beetween two positions that have already been protected, Use set_owner if you don't want the parent to be set.=Предоставьте игроку доступ к подобласти между двумя позициями, которые уже были защищены, Используйте set_owner, если вы не хотите, чтобы родитель был установлен.
+Give a player access to a sub-area between two positions that have already been protected, Use set_owner if you don't want the parent to be set.=Предоставьте игроку доступ к подобласти между двумя позициями, которые уже были защищены, Используйте set_owner, если вы не хотите, чтобы родитель был установлен.
 
 Invalid regular expression.=Неверное регулярное выражение.
 Limit: @1 areas=Лимит: @1 зон
 Limit: no area count limit=Лимит: нет ограничения по количеству зон
-List your areas, or all areas if you are an admin.=Список ваших зон, или всех зон, если вы admin.
+List your areas=Список ваших зон
 Move (or resize) an area to the current positions.=Переместить (или изменить размер) зоны до текущего положения.
 No matches found.=Совпадения не найдены.
 No visible areas.=Нет видимых зон.
+Too many areas to list all!=Слишком много зон, чтобы показать все.
 Owner changed.=Владелец изменён.
 Players with the "@1" privilege can protect up to @2 areas=Игроки с привилегией "@1" могут защитить до @2 областей
 
diff --git a/locale/template.txt b/locale/template.txt
index d47686c..936adc8 100644
--- a/locale/template.txt
+++ b/locale/template.txt
@@ -24,15 +24,16 @@ Change the owner of an area using its ID=
 Find areas using a Lua regular expression=
 Get information about area configuration and usage.=
 
-Give a player access to a sub-area beetween two positions that have already been protected, Use set_owner if you don't want the parent to be set.=
+Give a player access to a sub-area between two positions that have already been protected, Use set_owner if you don't want the parent to be set.=
 
 Invalid regular expression.=
 Limit: @1 areas=
 Limit: no area count limit=
-List your areas, or all areas if you are an admin.=
+List your areas=
 Move (or resize) an area to the current positions.=
 No matches found.=
 No visible areas.=
+Too many areas to list all!=
 Owner changed.=
 Players with the "@1" privilege can protect up to @2 areas=
 
diff --git a/pos.lua b/pos.lua
index 37d790a..91007e2 100644
--- a/pos.lua
+++ b/pos.lua
@@ -151,7 +151,7 @@ function areas:setPos2(playerName, pos)
 end
 
 
-minetest.register_on_punchnode(function(pos, node, puncher)
+minetest.register_on_punchnode(function(pos, _, puncher)
 	local name = puncher:get_player_name()
 	-- Currently setting position
 	if name ~= "" and areas.set_pos[name] then
@@ -231,7 +231,7 @@ minetest.register_entity("areas:pos1", {
 		            "areas_pos1.png", "areas_pos1.png"},
 		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
 	},
-	on_step = function(self, dtime)
+	on_step = function(self)
 		if self.active == nil then
 			self.object:remove()
 		end
@@ -252,7 +252,7 @@ minetest.register_entity("areas:pos2", {
 		            "areas_pos2.png", "areas_pos2.png"},
 		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
 	},
-	on_step = function(self, dtime)
+	on_step = function(self)
 		if self.active == nil then
 			self.object:remove()
 		end
diff --git a/protector.lua b/protector.lua
index 852183b..35cb258 100644
--- a/protector.lua
+++ b/protector.lua
@@ -23,19 +23,22 @@ minetest.register_node("areas:protector", {
 	groups = {cracky = 1, not_cuttable = 1},
 	node_placement_prediction = "",
 
-	on_place = function(itemstack, player, pointed)
-		local pos = pointed.above
-		local pos1 = vadd(pos, vnew(radius, radius, radius))
-		local pos2 = vadd(pos, vnew(-radius, -radius, -radius))
+	on_place = function(itemstack, player, pointed_thing)
+		local pos = pointed_thing.above
 		local name = player and player:get_player_name()
 
-		if name and not minetest.is_protected(pos, name) then
+		if not name or not minetest.is_protected(pos, name) then
+			local pos1 = vadd(pos, vnew(radius, radius, radius))
+			local pos2 = vadd(pos, vnew(-radius, -radius, -radius))
 			local perm, err = areas:canPlayerAddArea(pos1, pos2, name)
+
 			if not perm then
-				minetest.chat_send_player(name, red(S("You are not allowed to protect that area: @1", err)))
+				minetest.chat_send_player(name,
+					red(S("You are not allowed to protect that area: @1", err)))
 				return itemstack
 			end
-			if minetest.find_node_near(pos, 4, {"areas:protector"}) then
+
+			if minetest.find_node_near(pos, radius / 2, {"areas:protector"}) then
 				minetest.chat_send_player(name, red(S("You have already protected this area.")))
 				return itemstack
 			end
@@ -43,16 +46,19 @@ minetest.register_node("areas:protector", {
 			local id = areas:add(name, S("Protector Block"), pos1, pos2)
 			areas:save()
 			minetest.chat_send_player(name,
-				(S("The area from @1 to @2 has been protected as ID @3",
-				cyan(minetest.pos_to_string(pos1)), cyan(minetest.pos_to_string(pos2)), cyan(id))))
+				S("The area from @1 to @2 has been protected as ID @3",
+				cyan(minetest.pos_to_string(pos1)), cyan(minetest.pos_to_string(pos2)), cyan(id))
+			)
+
 			minetest.set_node(pos, {name = "areas:protector"})
 			local meta = minetest.get_meta(pos)
 			meta:set_string("infotext", S("Protected area @1, Owned by @2", id, name))
 			meta:set_int("area_id", id)
 			meta:set_string("owner", name)
 			itemstack:take_item()
-			return itemstack
 		end
+
+		return itemstack
 	end,
 
 	after_dig_node = function(_, _, oldmetadata, digger)
@@ -63,7 +69,7 @@ minetest.register_node("areas:protector", {
 			if areas.areas[id] and areas:isAreaOwner(id, owner) then
 				areas:remove(id)
 				areas:save()
-				minetest.chat_send_player(name, (S("Removed area @1", cyan(id))))
+				minetest.chat_send_player(name, S("Removed area @1", cyan(id)))
 			end
 		end
 	end,
@@ -71,16 +77,14 @@ minetest.register_node("areas:protector", {
 	on_punch = function(pos)
 		-- a radius of 0.5 since the entity serialization seems to be not that precise
 		local objs = minetest.get_objects_inside_radius(pos, 0.5)
-		local displayed = false
-		for _, o in pairs(objs) do
-			if not o:is_player() and o:get_luaentity().name == "areas:display" then
-				o:remove()
+		for _, obj in pairs(objs) do
+			if not obj:is_player() and obj:get_luaentity().name == "areas:display" then
+				obj:remove()
 				return
 			end
 		end
-		if not displayed then -- nothing was removed: there wasn't the entity
-			minetest.add_entity(pos, "areas:display")
-		end
+
+		minetest.add_entity(pos, "areas:display")
 	end
 })
 
@@ -95,7 +99,8 @@ minetest.register_entity("areas:display", {
 	timer = 0,
 	on_step = function(self, dtime)
 		self.timer = self.timer + dtime
-		if self.timer > 4 or minetest.get_node(self.object:get_pos()).name ~= "areas:protector" then
+		if self.timer > 4 or
+				minetest.get_node(self.object:get_pos()).name ~= "areas:protector" then
 			self.object:remove()
 		end
 	end
@@ -120,7 +125,7 @@ minetest.register_node("areas:display_node", {
 			-- bottom
 			{-nb_radius, -nb_radius, -nb_radius, nb_radius, -nb_radius, nb_radius},
 			-- middle (surround protector)
-			{-.55, -.55, -.55, .55, .55, .55}
+			{-0.55, -0.55, -0.55, 0.55, 0.55, 0.55}
 		}
 	},
 	selection_box = {type = "regular"},