Perhaps the poor UX of JustinMind's authentication is an indication of the quality of their software
So if you're trial has expired, when one attempts to log-in, it states the trial has expired and that one should sign-up. When one goes to sign-up, you cannot use your original credentials since they are taken. If you thinking downloading the software might help, and it give it a try, you cannot download it. The "Download" button directs one to authenticate. (Note that I am using a new machine.) So the geniuses at JustinMind found a way to keep me in a circular loop! Hmmm...might not be such a great app for exploring great UX!