Receive notifications even when the app is closed by running a small notification service/process in background.
Implemented in 24.02, if you want it supported by your distribution suggest that they package KUnifiedPush (https://invent.kde.org/libraries/kunifiedpush)!
Oh, I didn't know about that. So, I need to create a Dbus entry manually to receive ?
No messing with Dbus manually, Tokodon needs to be built with KUnifiedPush installed and then it's all done auto-magically. You can also see the push notification status using the KUnifiedPush settings in System Settings (called "Push Notifications") The only gotcha is that you usually need to log out and log back in for Tokodon to request the push notification permission, but Tokodon should warn you of such.
Created attachment 164670 [details] Screenshot of System notification settings. This is what I could find which one should I check. I don't know what else. Could you just type out the instructions to get notifications ?
It would be called "Push Notifications" in the sidebar, but remember that you need KUnifiedPush installed (https://invent.kde.org/libraries/kunifiedpush) and it's very likely your distribution does not yet.