Why DevProduct Script don't add players money?

Hello, i have problem with DevProduct Script and Gui. Sometimes it'll add money to player, but sometimes don't and i don't want to let player waste R$..

Here is script:

game.StarterGui.ResetPlayerGuiOnSpawn = false

local MarketplaceService = game:GetService("MarketplaceService")

function getPlayerFromId(id)
	for i,v in pairs(game.Players:GetChildren()) do
		if v.userId == id then
			return v
		end
	end
	return nil
end
 
MarketplaceService.ProcessReceipt = function(receiptInfo)
	local productId = receiptInfo.ProductId
	local playerId = receiptInfo.PlayerId
	local player = getPlayerFromId(playerId)
	local productName 
	if productId == 52142263 then
		productName = "2,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 2000
		end
	elseif productId == 52142300 then
		productName = "10,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 10000
		end
	elseif productId == 52142339 then
		productName = "25,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 25000
		end
	elseif productId == 127357125 then
		productName = "50,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 50000
		end
	elseif productId == 52142395 then
		productName = "100,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 100000
		end
	elseif productId == 127357286 then
		productName = "200,000$"
		local cashmoney = game.ServerStorage.PlayerMoney:FindFirstChild(player.Name)
		game.ReplicatedStorage.MasterKey:FireClient(player,"PurchaseConfirm")
		if cashmoney then
			cashmoney.Value = cashmoney.Value + 200000
		end
	end
	local message = Instance.new("Hint",workspace)
	message.Text = player.Name.." purchased "..productName.."!"
	coroutine.resume(coroutine.create(function()
		wait(2)
		message:destroy()
	end))

	return Enum.ProductPurchaseDecision.PurchaseGranted		
end

After buying one of these devproducts, i see in dev console something like this: https://gyazo.com/0a2b5e071d252c398828a14622261257 I don't know what does that mean. Is it problem with DataStore or something ?