01yuuri

I'm not an English speaker but I'm trying, pls read me: I was playing with my character named Iyuuri (then it was lvl 104) and suddenly after buying the Master Rider, ERRORS came out. When I finally got to enter the world, errors came out again once I wanted to get out of Dalaran (where my Home Stone is), when I touched a portal to Orgrimmar, to be precise. After a few weeks I tried again (it was before yesterday) and I had no problems, now I'm lvl 106. Buuuut.........now I can't enjoy the Warcraft, again! Before my last connection we didn't dissolve the group, the one I created, and its members are saying that I appear as "Unknown entity". Am I banned for real or is there any type of 'Firestorm court' (due to the message: "Your char is in process of unlocking.")? If so, I don't get what I did wrong because I'm kind to everyone. I want my acc back, please.