So I joined live arena win streak. First two fights I won. Then I clicked to find next opponent, after a while it found one, it said "you pick first", so I picked arbiter, after 3 seconds it displayed error "cannot find opponent" and returned me back to main screen, the button changed to "processing results". I thought there was some kind of outage on server, so I just waited. Then I tried to find another opponent again and exactly same thing happened. Only now I noticed that the previous fight was ended as lost.

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Now the win streak ended and it offers me to claim rewards for only two wins... Why? Check the logs what happened, I did not leave the fight nor did anything else. It just ended with "cannot find opponent" and claimed I lost.