I need an expert with the TweenService? My script got stuck!

Sorry for my bad english, i have write this script ->

local debounceimpostazioni = false
local function OnClickImpostazioni()
	if not debounceimpostazioni then
		debounceimpostazioni = true
		if ShopGUI.Position == UDim2.new(0.601, 0,0.706, 0) then
			if Sfondo.Position == UDim2.new(0.601, 0,0.956, 0) then
				if Audio.Position == UDim2.new(0.226, 0,0.11, 0) then
					if Gamepasses.Position == UDim2.new(0.483, 0, 1, 0) and Petss.Position == UDim2.new(0.726, 0, 1, 0) then
						local ImageTween = TweenService:Create(Sfondo,Animation,SfondoBack)
						local ImageTween2 = TweenService:Create(Audio,Animation,AudioBack)
						ImageTween2:Play()
						ImageTween2.Completed:Wait()
						ImageTween:Play()
						ImageTween.Completed:Wait()
					else
						local ImageTween = TweenService:Create(Audio,Animation,AudioBack)	
						ImageTween:Play()
						ImageTween.Completed:Wait()
					end
				else
					local ImageTween = TweenService:Create(Audio,Animation,AudioTarget)	
					ImageTween:Play()
					ImageTween.Completed:Wait()
				end
			else
				local ImageTween = TweenService:Create(Sfondo,Animation,SfondoTarget)
				local ImageTween2 = TweenService:Create(Audio,Animation,AudioTarget)	
				ImageTween:Play()
				ImageTween.Completed:Wait()
				ImageTween2:Play()
				ImageTween2.Completed:Wait()
			end
		end
	end
	debounceimpostazioni = false
end
Impostazioni.MouseButton1Click:Connect(OnClickImpostazioni)

I Need press 2 times for open a GUI, why?

https://www.youtube.com/watch?v=xHtcruovfUY&feature=youtu.be

You can check inside the video i press it 2 times for close the gui