TVAPP-00352 errors

I’ve been using the Xfinity Stream app for more than a year without major issues but for the past few weeks I can’t seem to stream in-progress recordings or live tv in my home for more than a few minutes before getting this error. My home network hasn’t changed and I have a very strong (>GB) internet connection. This is on an iPhone 14 Pro, and I’ve tried reinstalling the app, running the app without any other apps running, etc. Something seems to have changed to make the app itself far less reliable in terms of reliably streaming anything for more than a few minutes.