Why does this script not copy the tool properly?

Works great in studio play mode but not in a proper game server.

basically its supposed to find the key from lighting then change the value and give it to the player.

When tested it copies then deletes itself after a few seconds after not fully loading (no decal etc).

function onTouched(hit)
    if hit.Parent == nil then return end
    if (hit.Parent:findFirstChild("Humanoid") == nil) then return end
    local human = hit.Parent:findFirstChild("Humanoid") 
    local player = game.Players:GetPlayerFromCharacter(hit.Parent)
    if (game.Workspace:findFirstChild(human.Parent.Name.."House") ~= nil) then Message(player, "You already own a house.") return end
    if (human ~= nil) and debounce == false then
        debounce = true
        local stats = player:findFirstChild("leaderstats")
        if stats ~= nil then 
            local cash = stats:findFirstChild("Money")
            if cash.Value > (upgradecost-1) then 
                cash.Value = cash.Value - upgradecost 
                local housemarker= Instance.new("StringValue")
                housemarker.Parent = game.Workspace
                housemarker.Name = human.Parent.Name.."House"
                housemarker.Value = script.Parent.Parent.Parent.Name
                Message(player, "You now own this house.")
                --script.Parent.Parent.Parent.Vacant.Name = player.Name.."'s House"
                local stuff = script.Parent.Parent:GetChildren()
                for x = 1, #stuff do
                    if stuff[x].ClassName == "Model" then
                        stuff[x].Name = player.Name.."'s House"
                    elseif stuff[x].ClassName == "Part" then
                        stuff[x].Transparency = 1
                        stuff[x].CanCollide = false
                        if stuff[x].Name == "Sign" then 
                            stuff[x].Decal.Transparency = 1
                        end
                    end
                end
                script.Disabled = true
                housemodel.MainHouse.Owner.Value = player.Name
                if player.Backpack:findFirstChild("Key") == nil and player.Character:findFirstChild("Key") == nil then
                    local keycopy = game.Lighting.Key:clone()
                    keycopy.Value.Value = player.Name
                    keycopy.Parent = player.Character
                end
            else
                local message = Instance.new("Message")
                message.Text = "You don't have enough money."
                message.Parent = player
                wait(3)
                message:remove()    
            end
            wait(3)
            debounce = false
        end
    end
end

script.Parent.Touched:connect(onTouched)