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)