Thank you. I had a look at the page on my PC and found the information.

It is recommended to create an extra account if you use the app more often.

There is even (if the information is not out of date) up to 60% cashback.

I'm wondering whether this is a good thing or not.

Had thought that the shops would pay it, but that would be far too much. It would only make sense for Hive if the shops all advertise Hive in a big way, i.e. if there is a poster or something similar hanging conspicuously.