Meta forcing discourse login on IOS app?

I never added Meta to the discourse hub app on my IOS device, it just appeared one day. It certainly has made my engagement with Meta a lot easier.

I’m registered on Meta via Google, and today when trying to access Meta on the IOS app, I get a pop-up challenge asking about using a discourse login (which as I type this, I don’t have one), so I select cancel and not continue.

Google login works just fine via a browser.

Anyone else experiencing this?

Thanks!