If you haven't yet, please read this post from yesterday detailing how to log in. Taking these steps has solved issues for most users.
Welcome back to Trivium.org today! Thanks to everyone for their patience. You've been wonderful. I hope I've been addressing your concerns here, in private messages, and through the Feedback tab on the left of the site.
Former TriviumWorld.com member experiencing "upgrade now" or "become a premium member" messages? We believe we've discovered the issue. Turns out we were using an older database which does not...