Matchmaking problems


I'm encountering problems finding matches since this morning on european servers. After queuing for a while, the game indicates "preparing server" and after about 30 second, a red message pops up withe the sentence: "unable to find game". It does this both for Co-op and Versus servers. Moreover i've been able to join a game for the first time an hour ago after many tries, and i got returned to the menu without explanation after the map vote ended.

thx for considering my issue

Precisions: I've tried adding russian servers in the preferences without any success