No push notifications

Yesterday my iphone stopped showing me push notifications for everything. discord, snapchat, messenger, mail, games. i get an email sound but no notification, no sounds for anything else either. i have tried all my settings, even reset my settings with no luck. please help literally the only thing that has changed was i changed service providers yesterday and it seemed to have stopped when i swapped sims? i put my old sim in but it did not change anything. also did the software update last night which did not fix it.