Good luck, i have had a problem with my phone and lost access to my authenticator, they helped with that but wouldnt give me serial number as i cant get the paypal id anymore, can answer , date bought, log ins, char names everything else but without the id they wont help, ironically i had no problems with blizzard and bioware with my diablo and star wars authenticators. i dont want to use the guild wars one again now in case i have problems again and cant sort without serial number