Skip Stage Button for Obby not working?

I am having an issue with my skip stage button for my obby, basically when the player purchases the gamepass, nothing happens. The person who was helping me with the script, tested it in his game, and it was working. However, in my game, the script does not. Neither my friend, or I have a clue as to what the issue is, because no errors pop up.

Client code:

local marketplaceservice = game:GetService("MarketplaceService")
local skipId = 1110600158

function marketplaceservice.ProcessReceipt(receiptInfo)
	print("hi")
	if receiptInfo.ProductId == skipId then
		local plr = game.Players:GetPlayerByUserId(receiptInfo.PlayerId)
		local succ,err = pcall(function()
			plr.leaderstats.Stage.Value = plr.leaderstats.Stage.Value + 1
			plr.CurrentStage.Value = plr.CurrentStage.Value + 1
			plr:LoadCharacter()
		end)
		if err then
			return Enum.ProductPurchaseDecision.NotProcessedYet
		else
			return Enum.ProductPurchaseDecision.PurchaseGranted
		end
	end
end

Code in the GUI:

local MarketPlaceService = game:GetService("MarketplaceService")
local Button = script.Parent.ImageButton
local player = game.Players.LocalPlayer
local skipProduct = 1110600158
local skipEvent = game.ReplicatedStorage.Events.SkipStage

Button.MouseButton1Down:Connect(function()
	MarketPlaceService:PromptProductPurchase(game.Players.LocalPlayer,skipProduct)
end)

Any suggestions would be appreciated! (:

Firstly, in gamepass purchases, use :PromptGamepassPurchase() because :PromptProductPurchase() doesn't work with gamepasses. Try using this code:

local MarketPlaceService = game:GetService("MarketplaceService")
local Button = script.Parent.ImageButton
local player = game.Players.LocalPlayer
local skipProduct = 1110600158
local skipEvent = game.ReplicatedStorage.Events.SkipStage

Button.MouseButton1Down:Connect(function()
    MarketPlaceService:PromptGamePassPurchase(game.Players.LocalPlayer,skipProduct)
end)

If this doesn't work, comment below. I'll try fix it.