Hi tungaqhd, I am using v1.5 and there i found a bug when clicking on one shortener and returning to faucet links list without completing it, you are not able to complete another one because the site will redirect you to the previous uncompleted.
Hi, that is not a bug, many people complain the script spams shortener with many unused links and the script is banned from many short link sites. So i made this with an alert "Complete the link that you clicked before to be able to click the next link!"

Ok I understand, but at least that problem was not my case and I am thinking what happens if for one x reason the user is stuck with one shortener (has happened to me), he couldn´t try with another because of this restriction. I think you could make this feature optional in the admin panel.
Currently user can click other links again in 5-10 minutes when the old link expired but i will make it optional in next update. You can temprory disable it in controllers/Faucet.php , delete lines 99 - 103.