multiple developer product error?

Hey, ok so, i have a surface gui and on that surface gui i have three textbuttons each with the same script witch is here below

--Script in BuyButton part
--ignore this part
local click1 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Frame.tic1
local click2 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Frame.tic2
local click3 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Frame.tic3
local pay1 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Pay1
local pay2 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Pay2
local pay3 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Pay3
local pwait = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Frame.pwait
local ccancel = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Customer_View").SurfaceGui.Frame.Cancel
local cancel = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.Frame.cancel
local wclick1 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.Frame.click1
local wclick2 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.Frame.click2
local wclick3 = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.Frame.click3
local Declined = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.DECLINED
local numgone = script.Parent.Parent.Parent.Parent.Parent:FindFirstChild("Worker_View").SurfaceGui.Frame.Frame.pick

-- setup local variables
local MarketplaceService = game:GetService("MarketplaceService")
local productId = 21992025
 
-- define function that will be called when purchase finished
MarketplaceService.ProcessReceipt = function(receiptInfo) 
 
	-- find the player based on the PlayerId in receiptInfo
	for i, player in ipairs(game.Players:GetChildren()) do
		if player.userId == receiptInfo.PlayerId then
 
 
			-- check which product was purchased
			if receiptInfo.ProductId == productId then
 
				-- handle purchase
 script.Parent.Parent.Parent.Parent.Parent.Worker_View.SurfaceGui.accept.Visible = true        script.Parent.Parent.Parent.Parent.Parent.Worker_View.SurfaceGui.Frame.Frame.pick.Visible=false

wait(3)
script.Parent.Parent.Parent.Parent.Parent.Worker_View.SurfaceGui.accept.Visible = false
script.Parent.Parent.Parent.Parent.Parent.Worker_View.SurfaceGui.Frame.Frame.pick.Visible =true
pwait.Visible = true
click1.Visible = false
click2.Visible = false
click3.Visible = false
pay1.Visible = false
pay2.Visible = false
pay3.Visible = false
cancel.Visible = false
wclick1.Visible = true
wclick2.Visible = true
wclick3.Visible = true
ccancel.Visible = false

			end
		end
	end	
 
	
 
	-- tell ROBLOX that we have successfully handled the transaction
	return Enum.ProductPurchaseDecision.PurchaseGranted		
end

**and in the Starterpack i have this local script **~~~~~~~~~~~~~~~~~

--LocalScript in StarterPack -- setup local variables local buyButton = game.Workspace.ComputerMechanics1.Customer_View.SurfaceGui.Frame.Pay1 local productId = 21992025

-- when player clicks on buy brick prompt him/her to buy a product buyButton.MouseButton1Click:connect(function() game:GetService("MarketplaceService"):PromptProductPurchase(game.Players.LocalPlayer, productId) end)

--LocalScript in StarterPack -- setup local variables local buyButton = game.Workspace.ComputerMechanics1.Customer_View.SurfaceGui.Frame.Pay2 local productId = 21992101

-- when player clicks on buy brick prompt him/her to buy a product buyButton.MouseButton1Click:connect(function() game:GetService("MarketplaceService"):PromptProductPurchase(game.Players.LocalPlayer, productId) end)

--LocalScript in StarterPack -- setup local variables local buyButton = game.Workspace.ComputerMechanics1.Customer_View.SurfaceGui.Frame.Pay3 local productId = 21992105

-- when player clicks on buy brick prompt him/her to buy a product buyButton.MouseButton1Click:connect(function() game:GetService("MarketplaceService"):PromptProductPurchase(game.Players.LocalPlayer, productId) end)

**the problem is when someone click the first gui it prompts the developer product for them to buy and when they buy it nothing happens same with the third gui. but when some one buys the second gui it does what i want it to do which is located in the script.  The only error i get when i go to play the game and i go to the developer console and after i bought the developer product is RbxUtility.DecodeJSON is deprecated, please use Game:GetService("HttpService"):JSONDecode() instead** 
Thanks.