In simple words can you explain how it works?
Example in airbnb let suppose that the price for a week is 70000 yen i have to pay
this whole amount over paypal or credit/debit card  throught airbnb. Right?!

Then when I arrive at the accommodation the owner should give me 10%
cashback in byteball in this example this would be 7000 yen in byteball?

Can you confirm it works that way?
Thanks.

After the order was placed, or at some other point in the order process, you ask the customer about his Byteball address for receiving cashback. The address serves like the number of a loyalty card, and the concept should be familiar to mainstream customers even though it is a cryptocurrency. At this point, the customer should have already installed his Byteball wallet.

When the order is paid, or otherwise finalized, you send us the purchase details, together with the customer’s Byteball address, using our API https://github.com/byteball/byteball/wiki/Cashback-API. If you are handling the orders manually, you can also send the same information by manually filling out the form at https://byte.money. We immediately send cashback to the customer.

https://medium.com/byteball/byteball-cashback-program-9c717b8d3173