I didn’t get any activity points

In addition to a description of the bug you are reporting, please provide:

I’m not getting a single activity point even when I complete a random dungeon. I’ve played for dozens of hours and I’m not getting thousands of points because of a bug.

Device Type:phone
Device Model:15 pro max
Device Operating System:18.1.1
Diablo Immortal App Version:3.2.0

Already reported.
Once you’re Battle Pass capped, no more Activity Points can be earned…

That thread includes some information from the Chinese patch notes (that isn’t in the English patch notes) that suggests this is by design, not a bug.