According to this page:
Stripe doesn't support recurring donations. However, it appears they do according to their website:
Am I missing something?
No you are correct - Stripe does accept recurring donations but we have not updated our integration with them to accept recurring donations so it is not possible in NationBuilder.
It's a VERY popular suggestion (that I see you saw!) and I will update that suggestion if there is any progress.
Complete and current information on how to use NationBuilder is available in the documentation section.