Stripe Payment Failing in Pro Sites


I have had several Stripe payment fail through Pro Sites. Credit cards are still valid. I have users that have had their sites for a while, but when their payments fail, their sites go down. If they try to re-enter payment with the same card, it does not work.

I also see a new option to "Attempt to Reactivate Former Stripe Subscription". (screenshot attached). How does this work?