Revolut payment by unique link. Add your Revolut ID to Take App to let customer pay.

How to add Revolut as a payment method

Go to Admin > Settings > Payments and click Add payment method
Choose payment with "Revolut", Register your Revolut ID (e.g. https://revolut.me/ron), then click Save.
Make a test order and check if your Revolut QR working well.

Invoice amount prefill will only work for Personal Revolut Account and not Business Revolut Account.

Revolut Payment