Cannot login main character only: Lost connection to the server 90002

I was suddenly disconnected from gameplay and sent to the lobby server. I've since exited the game completely, rebooted my pc, waited a half hour and still only my main character cannot login. I can get in on any other character in any other data center or the same one, even the same server, even with a new character on the same server or another datacenter. Only my main character is affected in any way. Please help asap.