Duitnow QR can receive payment from most e-wallets and best thing is no MDR fee.
However some ppl may dislike because some e-wallets will not give they payor benefit like utilize voucher/points for payment.


Alternatively u can go apply for all the e-wallets and display all the individual e-wallets QR code at your shop.
Cons is merchant will have harder time to check different e-wallets or by faith just trust the payment was not fake screenshot.

Or u can apply for providers like epay with their machine can accept most e-wallet payment.