Why is this script not working in-game? [SOLVED]

Hello, So I'm trying to make a server selection GUI and I have a GUI of teleportation. If I play in studio it works fine, If I play in-game it doesn't work, It doesn't teleport and the GUI doesn't go away. I don't have any errors on both platforms.

[Edit: Please respond to me fast because I'm in a rush of making this game]

Script 1 (Local script, Inside a button called Server1):

local Select = game:GetService("ReplicatedStorage").Select
local Teleport = script.Parent.Parent.Parent.Teleporting

local RS = game:GetService("ReplicatedStorage")
local TPEvent = RS.TPEvent

script.Parent.MouseButton1Click:Connect(function()
	Select:Play()
	Teleport.Visible = true
	Teleport:TweenPosition(UDim2.new(0, 0, 0, -3), "In", "Quad")
	
	TPEvent:FireServer(script.Parent.Name)
end)

Script 2 (Script, Inside ServerScriptService):

local RS = game:GetService("ReplicatedStorage")
local TPEvent = RS.TPEvent

TPEvent.OnServerEvent:Connect(function(plr, server)
	plr.Character.Humanoid.WalkSpeed = 16
	plr.Character.Humanoid.JumpPower = 50
	
	local Teleport = plr:WaitForChild("PlayerGui"):WaitForChild("MainUI").Teleporting
	
	wait(1) -- TweenPosition delay
	
	wait(0.2)
	
	Teleport.BackgroundColor3 = Color3.new(150, 150, 150) -- Makes it gray
	
	wait(0.2)
	
    if server == "Server1" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-39.109, 0, 104.624) + Vector3.new(0, 50, 0)
    elseif server == "Server2" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-68.079, 0, 133.366) + Vector3.new(0, 50, 0)
	elseif server == "Server3" then
		 plr.Character.HumanoidRootPart.CFrame = CFrame.new(-12.131, 0., 104.608) + Vector3.new(0, 50, 0)
	elseif server == "Server4" then
		plr.Character.HumanoidRootPart.CFrame = CFrame.new(-67.991, 0, 104.952) + Vector3.new(0, 50, 0)
	elseif server == "Server5" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-39.931, 0, 133.366) + Vector3.new(0, 50, 0)
	elseif server == "Server6" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-13.286, 0, 133.366) + Vector3.new(0, 50, 0)
	elseif server == "Server7" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-68.079, 0, 160.401) + Vector3.new(0, 50, 0)
	elseif server == "Server8" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-39.676, 0, 160.401) + Vector3.new(0, 50, 0)
	elseif server == "Server9" then
       plr.Character.HumanoidRootPart.CFrame = CFrame.new(-13.541, 0, 160.401) + Vector3.new(0, 50, 0)
	elseif server == "Server10" then
        plr.Character.HumanoidRootPart.CFrame = CFrame.new(-13.541, 0, 186.562) + Vector3.new(0, 50, 0)
    end
	
	Teleport:TweenPosition(UDim2.new(2, 0, 0, -3), "Out", "Quad")
	
	wait(1) -- TweenPosition delay
	
	Teleport.Visible = false
end)

I would really appreciate it if you help me with my problem, Plus I'll accept your answer if it worked for me.

Thanks, MajinBluee