For Draft problems go to https://mtgarena-support.wizards.com/hc/en-us/requests/new/ and select "Report a problem with my event."

I won a game,saw. the victory screen, but my rank went down instead of up

This just happened to me, my opponent conceded in the 2nd round and I lost a bar.

Please, please, please address this!
It's been consistent. When an opponent forfeits the match for whatever reason I either lose rank or gain no rank. For instance I just lost the first game of a bo3, then my op. forfeit during sideboard. I went down rank!
Regardless if the op got disconnected (which right when we go into sideboard seems coincidental), I definitely shouldn't go down in rank. A draw? Better. But why aren't players being given the ranks for winning when an op disconnects? I know this would go for me if I disconnect too. But that's how it goes, right? Would love to hear more on this if anyone can share.

Here are my log files if they help.

Finished another game against player austinjuliuskim and lost rank again. Both games ended with a Maul of the Skyclaves on board in case that helps. Not playing anymore until I hear back

Played a very close game against a user Bademeister of Zendikar Rising sealed and upon victory I lost 1 rank bar instead of gaining one.

My username is AzusaStillSeeking, My opponent was Bademeister. I'd attach a log file but I'm not sure which one would be useful. game ended at 3:41 (ish) PM Mountain Standard Time

yeah me too i give my log if it can help plus a video