Wait for them to fix it. There server shutdown last week helped all but 2 of my character even though it wasn't supposed to. I think I've still got player not found on my 91 sorc and mule.
ic... but honestly when they shutdown to suposdely " Fix " it it honestly got worse... Before they tried ot fix it only 2 of my charscaters on 6 of my accounts were player not found now 5 accounts are all player not found and on the 6th account half the cahrs are unplayable... i cant do shit not even mf hope they fix it soon....
What I said up there with the server shutdown was this: They shut them down because people were complaining about losing their characters played under 2 hours within 48 hours. They restored the characters, but they said they were still working on the Player Not Found issue.
oh the Player Not Found bug happens for me when you click on a character and press enter and then it takes a long time an then you press cancel...and then after you try to click on the same character it says player not found...i solve that problem by re-logging in and then clicking on the character...loads and your ready to kill!!!