3rd-party notifications not coming through

Ever since a few days ago, I have not had any notifications from apps other than

built-on ones coming through on my device. I did not change any

settings (I did do a software update, but did that after the problem

arose, and the update did not fix the problem). I reviewed all my

settings, and then ended up resetting all settings, and even went as

far as wiping the phone clean and restoring it through a backup.

After restoring through the backup last night, 3rd-party

notifications came back at first, but between then and now they

aren’t coming again. I made sure Focus mode was turned off

during this entire process. Anything I’m doing wrong, or

something that can help with this? I feel like I’ve done all

the options.

I would really appreciate your help!