When i was plaing Arena Direct, i have started Finding opponent for my third Match (Current situation 1 W 1 L) then i choose to stop the researching for change some card on my deck. i changed some card then i'have start the research for my opponent. i've find the opponent but the match was already started, i don't have the opportunity of choose to mulligan or not and my first turn was already in play.
i'have lost the match and i lose the opportunity to continue