Getting listed as a service provider

Hello Hivians!
As the title already suggests, I would love to get listed as a service provider on Distriator, offering a range of small services to other users and the HIVE community. Users will then have the opportunity to use #SpendHBD and receive a certain amount refunded through the v4v.app.

Before I do, I have a few technical questions:

1. Amount of $HBD/$HIVE/$Sats requested - can the amount only be a fixed amount without the possibility to do, for example, service1 = 10 HBD, service2 = 20 HBD, etc.
2. QR code - can I use the QR code generated on the v4v.app website and receive payments?
3. Currency - can a customer pay in Sats or HIVE and still be eligible for a #SpendHBD reward?

Thank you for reading.