Problem with

I played several games online with bots, to get some xp. In addition to lags most of them ended in the middle with host saying that I quited (I didn't) and I'm not sure why. Sometimes games stops, and my client is reconnecting 30 sec or more. It's pretty annoying, I start the game and I can't finish it -.- I don't have problems with other online games at all, so I guess it is something at server side...

Maybe I'm doing sth wrong... I can't tell... Any advice?

Sounds like a desync, the server thinks you've alrady lost. If you could give a battle number (the junk starting with 'B' on your home page under 'last played') that would be helpful. Going through your games now. Though if its a desync, it might not come up in the replay.