A rename
Most likely your name was reported and thus you have to rename your character?
you don’t need a character name to whisper someone; your account name is right there
ArenaNet Communications Manager
You chose an offensive name and your character was flagged so that you must rename it to continue to play. Simply access your log-in screen and choose a new name and you’ll be fine.
Gaile Gray
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet