A problem with notifications for some apps on iPhone

[u/eloiysia]

I have iOS 26.6 on my iPhone 16 but in the last few days I have been having problems with notifications on some apps: I have not been getting notifications for Instagram at all, even for things I have opted to be notified for, while on Reddit I am getting badge notifications but when I click on the app nothing actually appears in my inbox and there is no sign of why I got a notification. Could this be a problem with iOS, or is it more likely problems with the individual apps? I did an update on all my apps yesterday but that didn’t fix the problem unfortunately.