Daily Reward script GUI opens only once?

Basically, I have a part you step on and it opens a GUI that gives them a Daily reward, the first time it works, but the second time it does not open but it gives the value of the daily reward. Why is this?

local debounce = false

function getPlayer(humanoid) 
local players = game.Players:children() 
for i = 1, #players do 
if players[i].Character.Humanoid == humanoid then return players[i] end 
end 
return nil 
end 

function onTouch(part) 

local human = part.Parent:findFirstChild("Humanoid") 
if (human ~= nil) and debounce == false then

debounce = true

local player = getPlayer(human) 

if (player == nil) then return end 
if player.DailyReward.Value == false then
script.Parent:clone().Parent = player.PlayerGui
wait(3)
debounce = false
player.PlayerGui.OnTouchGui.DWFrame.Visible = false
wait()
player.DailyReward.Value = true
debounce = false
if player.DailyReward.Value == true then
	player.PlayerGui.OnTouchGui.DWFrame.Visible = true
end
end
end
end


script.Parent.Parent.Touched:Connect(onTouch) 

The script below gives players the Daily Reward.

local currency = "Coins"
local amnt = 10

debounce = false

	function onTouch(hit)
		if hit.Parent:findFirstChild("Humanoid") ~= nil and debounce == false then
			if game.Players:findFirstChild(hit.Parent.Name) ~= nil then
			local ThisPlayer = game.Players:findFirstChild(hit.Parent.Name)
			local val = ThisPlayer.DailyReward.Value
			ThisPlayer.Stats:findFirstChild(currency).Value = ThisPlayer.Stats:findFirstChild(currency).Value + amnt
			script.Parent.Transparency = 1
			script.Parent.CanCollide = false
			val = true
			debounce = true
			wait(5) -- change to 86,4000 just for testing purposes
			script.Parent.Transparency = 1
			script.Parent.CanCollide = false
			val = false
			debounce = false
			end
		end
	end

script.Parent.Touched:connect(onTouch)