How to make GUI which pops up on touch, filtering enabled?

I am trying to make it so when the player touches this brick, a GUI is cloned and pops-up on the clients screen, and with that he can purchase a car and it will spawn in a designated area. When I try it in studio, it works fine, but in game it does not respond. The GUI (called SpawnGUI) will open, however none of the scrolling buttons nor the buy button works.

I have posted a copy of the script below. I am not used to filtering enabled, so I am not sure how to use remote events or remove functions. The player must click the buy button, which takes away 50 "Money" from the leaderstats and places the vehicle desired (all vehicles located in ServerStorage) in a specific place where all the cars will spawn.

Script for spawning GUI

script.Parent.Touched:connect(function(p)
    local player = game.Players:GetPlayerFromCharacter(p.Parent)
    if (player) then
        if (not player.PlayerGui:FindFirstChild("SpawnGUI")) then
            local GUI = game:GetService("ServerStorage").SpawnGUI:Clone()
            GUI.Regen.Value = script.Parent.Parent.Pos
            GUI.Parent = player.PlayerGui
        end
    end
end)

local s = 0
while wait(0.1) do
    s = (s + 2) % 360
    script.Parent.UI.StudsOffset = Vector3.new(0,5 + math.sin(math.rad(s)),0)
end

Script for giving car:

local P = script.Parent
local player = P.Parent.Parent
local index = 1

local vehicles = {

    {"Toyota Corolla 2010"  , 0}, 
    {"Smart Fortwo" , 0},
    {"Sudiko Green Yoga"    , 0},
    {"Sudiko Blue Yoga" , 0},
    {"Toyota Prius 2010"    , 0},
    {"BMW i3"   , 0},
    {"TCI"  , 0},
    {"Toyota Prius 2016"        , 0}
}

wait(0.5)
-- GUI vars
local bg = P.BG

-- Helper function
function SetInformation(index)
    bg.I.Image = "http://www.roblox.com/thumbs/asset.ashx?assetId="..vehicles[index][2].."&x=420&y=420"
    bg.T.Text = vehicles[index][1]
end

local locked = false
bg.S.MouseButton1Click:connect(function()
    local Money = player.leaderstats:FindFirstChild("Money")
    if Money.Value > 50 then
        Money.Value = Money.Value - 50

    if (locked) then return end
    locked = true
    local vehicleName = player.Name.."Car"
    local model = workspace:FindFirstChild(vehicleName)
    if (model) then model:Destroy() end
    model = game.ServerStorage.Vehicles:FindFirstChild(vehicles[index][1]):Clone()
    model.Name = vehicleName
    model.Parent = game.Workspace
    model:MakeJoints()
    model:MoveTo(P.Regen.Value.Position)
    P:Destroy()
    locked = false  

    else
        script.Parent.BG.S.Text = "Not Enough Money, 50 Needed!"
        wait(3)
        script.Parent.BG.S.Text = "Spawn"
    end
end)

bg.B.MouseButton1Click:connect(function()
    index = index - 1
    if (index < 1) then index = #vehicles end
    SetInformation(index)
end)

bg.N.MouseButton1Click:connect(function()
    index = index + 1
    if (index > #vehicles) then index = 1 end
    SetInformation(index)
end)

bg.Q.MouseButton1Click:connect(function()
    P:Destroy()
end)

SetInformation(index)

Please help me find a solution that it will work with filtering enabled, and please describe in detail the steps needed. Thankyou!