Does Wise still work?

Also can't you sandbox microG services to get around that integrity check by having a sandboxed Google play store?

They changed the requirement! I'm using it right now on GrapheneOs

Had to look it up myself

Wero is a European mobile payment system that should replace Giropay in Germany, Paylib in France,[1] Payconiq in Belgium[2] and Luxembourg, and iDEAL in the Netherlands. The service was launched on 2 July 2024 by the European Payments Initiative.[3] The service competes with PayPal, credit cards and similar services. It started as a real-time payment system in 2024, and from summer 2025 extended online payment functions were added on a step-by-step basis.

https://en.wikipedia.org/wiki/Wero_%28payment%29

Looks like it's an effort to standardise all the local versions of the same payment systems, which seem to be P2P mobile money transfer and payment systems

It's a payment method to send/receive money between individuals. Starting 2026, it will be possible to pay at businesses scanning a QR-code.

It's similar to what you can see in Asia, Pix in Brasil, etc.

I have the same question!

Probably banking on new users forking out for one of the premium tiers. There's a lot of flavours, I'm happy with the basic.