Not receiving notifications

Suddenly I am not receiving notifications for some apps anymore.

I have just updated to 17.3

All my settings for every app I want it for is on to Banners, Lock Screen, Notification Centre, sounds and badge.

Apps affected are Facebook, Instagram, Snapchat, WhatsApp, YouTube, Reddit, and some other random apps.

I did not know about scheduled summary before, so I turned that on now and put everything to IMMEDIATE delivery.

I do NOT have any focus mode on. And even if I did, a message on WhatsApp from my husband should go through as he’s on the bypass list. It only updates when I open the app, or if it maybe is still running in the background.

My husband had the same issue with WhatsApp, he updated too and updated any pending apps from the Store (but WhatsApp was not one of them) and now it seems to work. He’s receiving notifications from me again. I am not from him (or others). Not on any app. Not on WiFi, not on mobile data.

His is a iPhone 11, mine is 12 Pro Max.

I don’t know what else to do at this point.

What is causing this issue?

Not having these issues on iPad.

Thanks, and help!