Saving Tools Script not working with Filtering Enabled?

I made a script a while ago that saves the players tools when they leave the game and loads them back when the player enters the game. After I added filtering enabled to my game the script no longer works and for some reason it is breaking my leaderstats save script too. When I buy a weapon from the store, my coins goes down depending on how much I spent on the item. After rejoining the weapon is not saved and my coins are back to the way they were before i bought the item.

local Inventory = {}

local function Spawned(Char)
	local Plr = game.Players:GetPlayerFromCharacter(Char)
	for i,v in pairs(Inventory[Plr]) do
		if Plr['Backpack']:findFirstChild(v.Name) then
			Plr['Backpack'][v.Name]:Destroy()
		end
		v.Parent = Plr['Backpack']	
	end
	Inventory[Plr] = {}
	Char:WaitForChild('Humanoid').Died:connect(function()
		for i,v in pairs({Plr['Backpack'], Char}) do
			for ii,vv in pairs(v:GetChildren()) do
				if vv:IsA('Tool') then
					table.insert(Inventory[Plr], vv:Clone())
					vv:Destroy()
				end
			end
		end
	end)
end

game.Players.PlayerAdded:connect(function(Plr)
	Inventory[Plr] = {}
	local Char = Plr.Character or Plr.CharacterAdded:wait()
	Spawned(Char)
	Plr.CharacterAdded:connect(Spawned)
end)

Also the leaderstats save on their own. So if I earn 20 coins in game they save, but not when I purchase an item.

The main problem with your script is that it's local, and that you are trying to use the PlayerAdded event on a local script.

Also, don't use deprecated functions. (for example ":connect" should be changed to ":Connect".)

Also, here is the fixed script:

local Inventory = {}

local function Spawned(Char)
    local player= game.Players:GetPlayerFromCharacter(Char)
    for i,v in pairs(Inventory[player]) do
        if player['Backpack']:FindFirstChild-(v.Name) then
            player['Backpack'][v.Name]:Destroy()
        end
        v.Parent = player['Backpack']  
    end
    Inventory[player] = {}
    Char:WaitForChild('Humanoid').Died:Connect(function()
        for i,v in pairs({player['Backpack'], Char}) do
            for ii,vv in pairs(v:GetChildren()) do
                if vv:IsA('Tool') then
                    table.insert(Inventory[player], vv:Clone())
                    vv:Destroy()
                end
            end
        end
    end)
end

game.Players.PlayerAdded:Connect(function(player)
    Inventory[player] = {}
    local Char = player["Character"]
    Spawned(Char)
    Player.CharacterAdded:Connect(Spawned)
end)

! IMPORTANT ! This script must be a server-side script, and NOT a local-script.

Hope this helps.