Can anyone describe the flow of what I need to implement? I want to be able to sell a monthly service and to be able to charge each client based on the number of users my client has, so it's very likely that the number of users change month over month. Using Wix if it matters. The specific questions I've got What endpoints should I call when the number of users changes for one of my clients? How do I describe this in Paypal UI? What's the flow here?
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