The script stop running after one go?

Basically im making a purchasable portal, the buying portal of the script is based on a leaderstat if the leaderstat is 0 the player doesn't teleport but instead gets a GUI asking him to buy access to the portal but if the leaderstat is 1 it teleports the player through. The problem i face is that after the player touches the portal and doesn't have access to the portal like if he wanted to check how much it costs the gui pops up and if you click cancel or no on the GUI it goes away but then the script doesn't respond, it doesn't pop up a GUI and doesn't teleport you through even if you have access to the portal. Heres my script:

local ting = 0 --debouncer

function onTouched(hit)
    if script.Parent.Locked == false and script.Parent.Parent:findFirstChild('Part2').Locked == false then script.Parent.Locked = true script.Parent.Parent:findFirstChild('Part2').Locked = true --Debounce.
    local Pos = script.Parent.Parent:findFirstChild('Part2').tp2
    if ting == 0 then --debounce
    ting = 1 --activate debounce

    local check = hit.Parent:FindFirstChild("Humanoid") --Find the human that touched the portal

    if check ~= nil then --If a human is found, then

        local user = game.Players:GetPlayerFromCharacter(hit.Parent) --get player from touching human
        local stats = user:findFirstChild("telestats") --Find the file for stats

        if stats ~= nil then --If stat exists then

            local cash = stats:findFirstChild("tele1") --Get stats

            if cash.Value == 0 then
                print("OMG ITS WORKING NO WAYYYY!")

                user.PlayerGui.Buy.Frame.Visible = true
            else
                if cash.Value == 1 then
                wait(0.5)-- delays time till teleporting so if player is still touching part the player doesnt spazz between the portals

                hit.Parent:moveTo(Pos.Position) wait(1) script.Parent.Locked = false script.Parent.Parent:findFirstChild('Part2').Locked = false -- one last debounce check and teleports player
                end
            end

            wait(3)

        end
        end
        end

    ting = 0

    end
end
script.Parent.Touched:connect(onTouched)-- checks for anymore players that touch the part

i dont know what im doing wrong is there something i need to add? if you find the problem and fix it thanks ALOT!