Today I got a new subscriber (doesn’t happen often, so yay ). They surely have had to register using Stripe’s Pro Form.
Their payment was declined on first try.
Stripe tried again, then it had success.
Subscription / User was not created on my site’s database.
Subscription was successfully created on Stripe.
I emailed the user so they can manually register for a free account and I’ll upgrade them manually, but this is a manual workaround. I don’t remember s2Member having this problem before, so I am reporting it here.