I see a weird number istead of my nickname in NA EAST!

Trevzor: Heyo!   Try deleting the cache and dossier data for your game.   To do this:
Please click on your start menu and in the search/run box type "%appdata%" (without the quotes) and press enter, then in the folder that comes up we would like you to double-click on the wargaming.net folder. Now delete the World of Tanks folder.   Once you have done this, run World of Tanks.   If there is no change, please send us a ticket in support. We'll be able to investigate the issue further.   Good luck! I hope to see you on the battlefield!