Some players are reporting a Diablo 3 Achievements Display Bug when trying to view Achievements (theirs and others). Blizzard have advised logging in and out again which is working for some people. Others it doesn’t and still their Achievements will not display. Blizzard have assured everyone that it is a display problem and that achievements are being tracked and logged and they are looking into fixing the problem.
In the short term, the log out workaround (detailed here) is working for many players and we encourage you to give that a try if you are experiencing this. Please note that this is just a temporary workaround, and may not work for all players. If this does not work for you right away, please wait a short while and try again.
We really appreciate your patience while we are working on a permanent resolution. Thank you all for the reports about this!
I can’t seem to connect to even check if I have the problem. It could be pretty rare.