Google Pay under Sailfish X/MicroG

I was surprised to be able to create a bank account on the app-only Revolut. It links with Google Pay to allow free electronic payments (a physical card is 6€).

Google Pay (Aptoide) struggles with something here (XA2, screen goes blank or has an empty box with a reload icon).

Now it probably needs a Google Account and MicroG refuses to register one for some unfathomable reason. I can’t look for errors without rebuilding the Dalvik partition.

I can understand if people don’t trust it but did anyone get it to work?

PS I downloaded an orange Aptoide store from F-Droid I think and it seems much better than the green one the Sailfish store links to.