Oh, coincidence you left your phone on. It's not a glitch. The ratings in puzzles changed a lot for everyone. chess.com announced they would do this in the last State of chess.com live stream, but obviously it just recently happened:
https://www.chess.com/news/view/announcing-new-puzzles-rating-system
As far as the rest of my stats are concerned, I gained points from that puzzle and I’m not sure if this is just visual or if I actually lost a third of my rating over this stupid thing.
I tried restarting the app, checking on the web version, restarting my phone, logging out and logging back in again. Any other suggestions?