For Germany merchants need to accept bank transfer, so the customer enters their banking details and the advertisers charges their bank account for the amount of the rebill offer.
That is the most common form of payment in germany for online stuff, and paypal of course, but I could think that would be a problem with rebill offers.
That is the most common form of payment in germany for online stuff, and paypal of course, but I could think that would be a problem with rebill offers.