We’ve just released v3 of the Stripe for SimpleCart payment gateway. This version uses the Payment Intents API for card payments (while still using Sources for iDeal/Bancontact) enabling Secure Customer Authentication through 3D Secure 2.0.
As it’s a major release, it’s available in the pre-releases channel. As SCA will be required in the EU by the 14th, please contact support immediately if you run into any issues with this pre-release.