In DEN right now. A bit earlier, after clearing security, my reservation disappeared from the app. I freaked out and rushed to the Sky Club but by that time it had reappeared and the club agents said everything in my reservation looked normal.

Fast forward to boarding and the reservation (and several others) disappear again. Went to gate agent and she said it was computer issues and easily printed paper BP for me.

Currently boarding, they are manually entering seats into he gate computer as we board.