Thanks a lot for an in-depth tutorial! I’ve made the button work and redirect me to the checkout page, but I get an error when trying the Stripe test cards to check if the payment can go through. Once I enter all of the details (correct ones) and submit it, it says that card has been declined and that email is required (which is filled in). Attaching a screenshot as well.
Any help would be appreciated as we really need to nail this down with my client shortly 
Thanks!
