ive tried to enter past passwords,ive tried reentering account and password,but after the patch with a lv 80 version of ony,first ptr acted like it didnt exist,then it acts like i either enter the wrong password or my account doesnt exist,no i ddint merge with battle.net,and yes ive tried old passwords,what should i do and what could be causing this?

Please see the PTR FAQ sticky for information on the error you're receiving.