I am no longer receiving any notifications through Discourse Hub v 1.6.0 on my Android 10 smartphone. Notifications have worked in the past (although I can’t recall if they only came from Meta, or from the self-hosted instance that I’m running).
The connection between the mobile app and my forum otherwise seems to work, as unread and recent messages counters are updated—although this only happens when I launch the app or when I bring it to the foreground using the task manager. The “Last updated” indicator seems to tell me that no updates are actually performed while it’s in the background.
In my Device Care Android settings, Adaptive battery is disabeld and Discourse Hub is in the list of Apps that won’t be put to sleep.