How do I connect GUIs and scripts in the workspace?

I am scripting a portal, that brings you to another place I have. I got the portal part functional, but I am trying to make it where you need to buy entry to the portal. It gets to "Not enough money" in the output, but It won't turn on visibility to the frame that holds a text that says, "Not enough money" It is on line 49 and 51.

local teleporter = game.Workspace.Trail.Teleporter
local cash = game.ServerScriptService.PlayerCash

local currencyName = "Dollars"
local debounce = false	
local unlocked 

local StarterGui = game:GetService("StarterGui")


-- purchasing for 50,000 dollars

teleporter.Touched:Connect(function(hit)
	print("Hit Detected")
	local human = hit.Parent:FindFirstChild("Humanoid")
	
	if human then
		
		print("Human Hit Detected")
		
		local char = hit.Parent
		local player = game.Players:GetPlayerFromCharacter(char)
		
		if unlocked == true then
			local TeleportService = game:GetService("TeleportService")
			local teleporter = game.Workspace.Trail.Teleporter
			
			StarterGui.Teleporting.TeleportingFrame.Visible = true
		
			TeleportService:Teleport(4847090550, player)
			
		else
			print("Unlocked doesnt = true detected")
			
			local Yes = StarterGui.Teleporting.Buying.Yes
			local No = StarterGui.Teleporting.Buying.No
			game.StarterGui.Teleporting.Buying.Visible = true
			-- They bought it
			Yes.Activated:Connect(function()
				if player.leaderstats[currencyName].Value <= 50000 then
					player.leaderstats[currencyName].Value = player.leaderstats[currencyName].Value - 50000
					unlocked = true
					StarterGui.Teleporting.Buying.Visible = false
					StarterGui.Teleporting.Buying.Active = false	
				else
					local Moneylow = StarterGui.Teleporting.NotEnoughMoney
					print("Not enough money detected")
					
					Moneylow.Visible = true
					wait(5)
					Moneylow.Visible = false
					end
				end)		
	
			No.Activated:Connect(function()
				unlocked = false
				StarterGui.Buying.Visible = false
				StarterGui.Buying.Active = false			
			end)
	
		end
				
	end

end)