Thank you for your reply, Ryan.

We've implemented the recurring functionality, but what about the free trial followed by monthly payment, is there anyway to do this, for example, we can let some user apply to this free trial, then we approve it, and give the user a limited period role without paying money, and in this limited period, they can cancel this so that they will avoid paying the bill after the free trial? Thank you.

Best Regards,
Yang Ru