MUT Challenges Kick Me Back to Main Menu

For the past couple weeks, I haven't been able to play any new Challenges in MUT.  I have every other challenge completed, am able to play old challenges like Training Camp, and have been able to play H2H without any issues. But I am not able to access any of these without getting kicked from MUT and sent back to the main menu:

- Ultimate Legends XX
- Flashbacks Week 24
- Epic Challenges Season 10: Rookie Rumble
- Rookie Premiere

Normally I wouldn't care about completing challenges this late into the game cycle, but my main concern is not being able to do the Rookie Premiere challenges because without those, I will be unable to get the RP player that I can transfer over to M27.

And yes, I have tried deleting/reinstalling the game, updating the license... the usual troubleshooting tips that I could think of.

Can anyone help?

(cm edited title for vis)