I have never received receieved notifications through the usual notifications at the top of the screen, does the app not do that or is it my phone? I have to open Jerboa to see that I got either a reply or a message.
I use the F-Droid version of Jerboa on GrapheneOS 13.
On stock android 12 I never get notifications. Also the f-droid version. I didn’t even know it was a feature.