Return of Reckoning

Whenever I buy a renown ability to buff a stat, it ends up saying that I've spent the points, and I get a bonus for a while. And then it undoes what I just purchased.

This is a well-known visual bug. The renown trainers do not show the abilities or points that you have already spent. If you want to have full access to your points, you will need to respec at the trainer and re-spec your renown.

At this time, respeccing renown is free.