I think Active Users is now called Daily Engaged Users, meaning distinct IP addresses that have either liked or posted. Pageviews are between 40k and 50k per day.
What version of Discourse are you running ? I’m on 2.3.0 beta3 +83 and see a different stats screen as below. It might be a super secret Mod stats screen in which case I reserve the right to remove it and pretend this never happened: