Abilities do not go off, and some show “Cooldown remaining: 13 days”: https://i.imgur.com/SNckdAg.png
Tried 72 character, created a new templated DK and a level 1 warlock, all with the same issue
Edit: deleted Cache, WTF folders. Scan & Repaired the game, nobody in-game reported a similar issue. Windows 10. Had multiple crashes after the servers came back up with a DIVIDE_BY_ZERO exception.
Edit2: fully reinstalling the game did not work, but playing the beta on a different computer did. Reinstall involved fully deleting the
Edit3: the issue resolves itself by restarting the computer, hope that helps others having it