No notifications mainly for Whatsapp and Signal
Guys,
suddenly my iPhone XS Max stopped raising notifications, mainly for Whatsapp and Signal. I was on iOS 14.8 when this happened and since then I've upgrades to 14.8.1 and to 15, but there was no improvement.
Another symptom is that when I open Whatsapp desktop, it synchronizes only when my Whatsapp is open on the phone. Initially I thought it had something to do with background executions or low battery mode, but the settings seem fine and it's something different that I can't identify.
I've tried everything in settings: background running, low batery settings, notification (both iOS and app settings), reboot iPhone, disable and enable cel data, wifi, airplane mode and non-disturb mode. Nothing happens.
I'm not considering reinstall apps or refresh the cel phone completely, because it would be a last try. If I have to refresh my whole phone every time something minor happens, I'll switch to Samsung without a second thought.
I noticed the tread (https://discussions.apple.com/thread/252803737) without an answer. I wonder if this has been solved elsewhere.
Thank you.
iPhone XS Max