They currently support authors living in nineteen countries (Austria, Australia, Belgium, Canada, Switzerland, Germany, Denmark, Spain, Finland, France, The United Kingdom, Ireland, Italy, Japan, Luxembourg, Netherlands, Norway, Sweden or The United States), which isn’t that small. Stripe is used for credit card payments (purchases of books), not necessarily paying authors. I don’t want to answer for Inkshares, but there are different legal requirements when paying royalties to authors in different regions, and Inkshares need to make sure they have their legal arrangements in place. As a small team, it may not be practical, or financially viable, for them to work with all jurisdictions. Or, it may just be a matter of time for them to be able to support it.