How to set up payments in the mobile app? I already have the application, I contacted the developers about this issue, but to be honest, I did not immediately think about payments, and no one told me about it.
I think that there is nothing to worry about if you contact the developer again and get the services you need. In general, I can advise you to kindgeek, since I contacted these specialists to just set up payment gateway for mobile app. It seems to me that this is exactly the problem that you are facing now.