Since a lot of people have been asking, here is a small PSA:
The PBE has been updated on 2/17 with an air only patch which temporarily removed Replays and Quinn and Valor. Additionally a small hot fix ( ~10 mb in size on NA ) was deployed to live. There hasn't been a post on what exactly was in it, but it's likely just various bug fixes. I also noticed the "NULL" error when checking profiles is gone, woohoo.
The PBE patch was probably just to test a few bug fixes before they pushed the hot fix to live. I would expect Quinn and Valor / Replays back soon .