Board Thread:General Discussion/@comment-49.144.53.158-20140118061848/@comment-219.73.61.139-20140122125740

Got same issue, you probably changed your IMEI number on your phone for a generic one. Seems game account are based on phone IMEI so its just you got same IMEI as someone else, if you didn't change it possibly the other person who changed his phone IMEI and got the same one as you.