Messenger won't load New Message Requests

Do you still have the problem at present? If you do, then you could try the following ways to fix it.
1. Check the update of the Facebook Messenger.
2. Re-open the app or reboot your device to remove some bugs.
3. Check network connection.
4. Use third-party ios system repair tools like TunesKit iOS System Recovery to fix without data loss and with an almost 100% success rate.
Step 1: Download the software and connect your device to PC.
Step 2: Select Standard Mode to fix the issue without data loss.
Step 3: Fix the problem.

Checking the settings for Facebook notifications and Do Not Disturb would be more effective methods. And using TunesKit iOS System Recovery is not good advice. It's a useless program. If you need to fix iOS or software glitches, I recommend using RecoveryTool Fix Recovery.

I’ve run into something similar before, and a few things that might help:

• Try logging out of Messenger and Facebook, then log back in.

• Also, if you're using the Messenger app, see if it works better on the browser version (or vice versa).

• Sometimes clearing the cache for the app (if you're on Android) can help clear out whatever's stuck.

• If nothing works, try checking your message requests from the Facebook website directly, it’s under Messages > Message Requests > See Spam.

Hope one of these works for you!