We've finally released an update to our Stripe for RSForm plugin which adds Strong Customer Authentication (SCA) though the Stripe payment gateway.
Between losing a developer due to family comitments and then an unfortunate pairing with a new developer that didn't fully understand the tasks needed and tried to rebuild the entire plugin which lacked all of the unique functionality that makes our version useful, we ended being set back over 14 weeks with wasted time and effort.
Version 2.0 uses the latest version of the Stripe API. Be sure to login to your Stripe dashboard an enable the lastest version of the API if it's not already set to 2019-11-05 or newer.