Values are not saving in DataStore?

Hello.

Solution:

Use Player.PlayerGui instead of game.StarterGui as StarterGui is the container for gui you start with. Gui's in StarterGui get cloned into the player's PlayerGui. PlayerGui is the container for the actual gui itself.

Fixed Code:

local DataStoreService = game:GetService("DataStoreService")
local inventory = DataStoreService:GetDataStore("Inventory")

game.Players.PlayerAdded:Connect(function(player)
    local values = player:WaitForChild("PlayerGui").ShopValues.FirstWalkspeed
    local koalaInv = game.ReplicatedStorage.HatValues.KoalaInventoryCount
    local koalaQue = game.ReplicatedStorage.HatValues.KoalaCount

    local Data

    local success, err = pcall(function()
        Data = inventory:GetAsync(player.UserId.."_Data", values.Value)

    end)
    if success then
    print("loaded")
        values.Value = Data[1]
        koalaInv.Value = Data[2]
        koalaQue.Value = Data[3]

    else
            print("Error getting data")
            warn(err)
    end


end)


game.Players.PlayerRemoving:Connect(function(player)

    local values = player.PlayerGui.ShopValues.FirstWalkspeed
    local koalaInv = game.ReplicatedStorage.HatValues.KoalaInventoryCount
    local koalaQue = game.ReplicatedStorage.HatValues.KoalaCount

    local toSave = {values.Value, koalaInv.Value, koalaQue.Value}


    local success, err = pcall(function()
        inventory:SetAsync(player.UserId.."_Data", toSave)

    end)

    if success then
        print ("data saved")
    else
            print("There was an error")
            warn(err)
    end

end)