My script does not give a GUI after the player dies?

The script is supposed to give the player a GUI if they join the game and everytime they die. When they first join the game, they initially receive the GUI, but after they die, they no longer get the GUI again. This script works in solo mode, but does not work in an actual ROBLOX game. Can anyone think of any reasons this does not work? I can't understand why. I think it might be something wrong with the end part of the script but it looks right to me.

function PlayerJoined(Player)
local Stats = Instance.new("IntValue")
Stats.Name = "leaderstats"
Stats.Parent = Player
local Points = Instance.new("IntValue")
Points.Name = "Points"
Points.Value = 0
Points.Parent = Stats
Powerups[Player] = {WalkSpeed = 16, AntiGrav = 0}
Player.CharacterAdded:connect(function(Character)
UpdatePowerUps(Player)
Character.DescendantAdded:connect(function()
UpdatePowerUps(Player)
end)
Character.DescendantRemoving:connect(function()
UpdatePowerUps(Player)
end)
local Gui = Instance.new("ScreenGui")
Gui.Name = "SpectateGui"
local Button = Instance.new("TextButton")
Button.BackgroundColor3 = Color3.new(0.1, 0.8, 0.9)
Button.BackgroundTransparency = 0.2
Button.Position = UDim2.new(0, 0, 1, -90)
Button.Size = UDim2.new(0, 350, 0, 20)
Button.Text = ({[false] = "Spectating", [true] = "Playing"})[Playing[Player]] .. " (Click to switch)"
Button.Parent = Gui
Button.MouseButton1Click:connect(function()
Playing[Player] = not Playing[Player]
Button.Text = ({[false] = "Spectating", [true] = "Playing"})[Playing[Player]] .. " (Click to switch). It will affect you whenever a new round starts."
end)
local WalkspeedUp = Instance.new("TextButton")
WalkspeedUp.BackgroundColor3 = Color3.new(0.9, 0.9, 0.9)
WalkspeedUp.BackgroundTransparency = 0.2
WalkspeedUp.Position = UDim2.new(0, 0, 1, -110)
WalkspeedUp.Size = UDim2.new(0, 155, 0, 20)
WalkspeedUp.Text = "WalkSpeed +2 for 50 points (" .. Powerups[Player]["WalkSpeed"] .. ")"
WalkspeedUp.Parent = Gui
WalkspeedUp.MouseButton1Click:connect(function()
if Powerups[Player]["WalkSpeed"] < 60 then
if Points.Value >= 50 then
Points.Value = Points.Value - 50
Powerups[Player]["WalkSpeed"] = Powerups[Player]["WalkSpeed"] + 2
WalkspeedUp.Text = "WalkSpeed +2 for 50 points (" .. Powerups[Player]["WalkSpeed"] .. ")"
UpdatePowerUps(Player)
end
end
if Powerups[Player]["WalkSpeed"] >= 75 then
WalkspeedUp.Text = "WalkSpeed Maximum (75)"
end
end)
local GravityUp = Instance.new("TextButton")
GravityUp.BackgroundColor3 = Color3.new(0.9, 0.9, 0.9)
GravityUp.BackgroundTransparency = 0.2
GravityUp.Position = UDim2.new(0, 0, 1, -130)
GravityUp.Size = UDim2.new(0, 155, 0, 20)
GravityUp.Text = "Gravity -4% for 50 points (" .. 100 - Powerups[Player]["AntiGrav"] .. "%)"
GravityUp.Parent = Gui
GravityUp.MouseButton1Click:connect(function()
if Powerups[Player]["AntiGrav"] < 60 then
if Points.Value >= 50 then
Points.Value = Points.Value - 50
Powerups[Player]["AntiGrav"] = Powerups[Player]["AntiGrav"] + 4
GravityUp.Text = "Gravity -4% for 50 points (" .. 100 - Powerups[Player]["AntiGrav"] .. "%)"
UpdatePowerUps(Player)
end
if Powerups[Player]["AntiGrav"] >= 60 then
GravityUp.Text = "Gravity Minimum (40%)"
end
end
end)
local TutorialLabel = Instance.new("ImageLabel")
TutorialLabel.BackgroundColor3 = Color3.new(1, 0.9, 0.2)
TutorialLabel.BackgroundTransparency = 0.2
TutorialLabel.Position = UDim2.new(0, 0, 1, -268)
TutorialLabel.Size = UDim2.new(0, 1, 0, 1)
TutorialLabel.Parent = Gui
local Index = 0
local PlayerGui = Player:FindFirstChild("PlayerGui")
while not PlayerGui do wait() PlayerGui = Player:FindFirstChild("PlayerGui") end
Gui.Parent = PlayerGui
while PlayerGui.Parent do
Index = Index + 1
if Index > #Tutorial then Index = 1 end
TutorialLabel.Image = Tutorial[Index]
wait(5)
end
end)

When I added your code into a script in a new place it said that you were missing an "end", but I assume you just forgot to copy it.

But I think the issue is that you didn't fire your "PlayerJoined()" function! Look at my code on line 34 on how do that, also replace "OnPlayerAdded" with your function "PlayerJoined"

Below is how I would've formatted it

local Players = game:GetService("Players")
local ServerStorage = game:GetService("ServerStorage")

-- Notice how I dont use ":FindFirstChild", because everything
-- is based on when the Player and Character are added, so we
-- can assume they're already loaded if that function is called.

local TemplateGui = ServerStorage.TemplateGui
-- I suggest pre-frabricating the GUI so we dont have to
-- remake it everytime a new character is spawned. Later
-- In the code we will just clone this and edit the values
-- to be player specific.

local function OnCharacterAdded(Character)
	local Player = Players:GetPlayerFromCharacter(Character)
	-- Getting the Player from the Character
	local ClonedGui = TemplateGui:Clone()
	
	ClonedGui.TextLabel.Text = Player.Name
	-- Do the Gui edits here...
	
	ClonedGui.Parent = Player.PlayerGui
	-- You did this in your script which is good because
	-- we edit the Gui before the player sees it. Preventing
	-- the player from seeing the default values.
end

local function OnPlayerAdded(Player)
	Player.CharacterAdded:Connect(OnCharacterAdded)
	-- Whenever the Player's Character spawns in we fire this
end

-- ":connect()" is depreciated use ":Connect()"
Players.PlayerAdded:Connect(OnPlayerAdded)