Why will this script only work the first time I die?

I am trying to make a script that will stop the player from moving and will make a GUI appear when they die. When I die for the first time the script works perfectly; however, when I die the second time it doesn't. Any help?

Script in question:

-- Variables

local looky = game.Workspace.CurrentCamera
local player = game.Players.LocalPlayer
local char = player.Character
local hum = char:WaitForChild("Humanoid")
local storage = game:GetService("ReplicatedStorage")


-- Handles when the play button is clicked

script.Parent.Playbutton.MouseButton1Click:Connect(function()
local backpack = game.Players.LocalPlayer.Backpack

for i, child in pairs(backpack:GetChildren()) do
	
		if child:IsA("Tool") then
		
		storage.RemoteEvents.MobileOn:FireServer()
		script.Parent.Visible = false
		repeat
		wait()
		looky.CameraType = Enum.CameraType.Custom
		until looky.CameraType == Enum.CameraType.Custom
		
		else
			script.Parent.Parent.NoSword.Position = UDim2.new(0.321, 0,0.321, 0)
		end
	end
end)

-- The part that is giving me trouble

	hum.Died:Connect(function()
		wait(5)
		
		storage.RemoteEvents.MobileOff:FireServer()
		
		repeat wait() 
		looky.CameraType = Enum.CameraType.Scriptable
		until looky.CameraType == Enum.CameraType.Scriptable
		
		repeat wait()
		looky.CFrame = game.Workspace.startingcamerapos.CFrame
		until looky.CFrame == game.Workspace.startingcamerapos.CFrame
		
		script.Parent.Visible = true
	end)

Script that updates the WalkSpeed and JumpPower when the BoolValue changes:

local mobile = Instance.new("BoolValue", game:GetService("ReplicatedStorage"))
mobile.Name = "mobile"
mobile.Value = false


game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(char)
		
	char.Humanoid.WalkSpeed = 0
	char.Humanoid.JumpPower = 0
		
		mobile.Changed:Connect(function()
			if mobile.Value == true then
				char.Humanoid.WalkSpeed = 24
				char.Humanoid.JumpPower = 50
				
			elseif mobile.Value == false then
				char.Humanoid.WalkSpeed = 0
				char.Humanoid.WalkSpeed = 0
			end
		end)
	end)
end)