"tmobile diagnostics keeps stopping" galaxy s20 pop-up

Same Issue. I've tried force stopping both T-Mobile apps. Uninstalled updates to the T-Mobile app, re-installed those updates. No change. Restarted my phone. Reached out to support via Twitter, and they had me wipe my cache partition. They then wanted me to reset my network settings. I refused to do that, as I have a lot of wifi passwords saved.

I also turned off diagnostic metrics from inside of the T-Mobile app with no change.

Does anyone have any other suggestions?