I can not login to my account with my username and password. I can login via only facebook auth. A few minutes ago I checked my account and I saw the my e-mail address is different. I have never changed my e-mail address. There can be two cases for this situation. 1- Maybe my account has been hacked. 2- This two accounts have been merged because of a bug. Last week I opened a topic (ID:4365178) but I couldn't get any answer. please help me for this case.