@jkeyne that's a useful tip. It hasn't worked but I've learned a bit.
I can download but the install fails saying it can't find compatible ABIs. But my phone reports an MT6739 processor, which is Armv8 and I can see the app apk's in #AuroraStore include v8a.
The apps claim to be targeting SDK 33 (Android v13) which means they should work with my v11 (SDK 30).
Several apps are like this, I suspect all updated to SDK33 because recent Play deadline but now won't work on this v11 #Armv8 phone 🤷♂️
happyborg