OMFG, you just can't perform maintenance without breaking everything else. don't you? ITS NOT A FIRST TIME.. oh nvm, you won't do nothing because nobody reads this -_-, so my writing is useless...
So i can't enter to the game since last maintenance (July 29th), i did it once but then i couldn't check my friends list (connecting to messenger server), chat wasn't working and i was unable to change channel.
I have now windows 10 I used the compability mode with windows 8 option checked and the problem continues..
Actually, before maintenance I've had win 10 too and the game was working almost perfectly.