Hi Polok, been replying to the other similar comments—seems like this is an issue occurring more often as of late. Banks sometimes will decline online purchases from Stripe that don't have a ton of meta data like user address, name, etc.
Working on a fix to ensure the subscription success modal doesn't show for as long as a bank payment is still pending. Also looking to upgrade the subscription sign-up to include a few extra meta fields like first and last name.
Sorry for the inconvenience, but be sure to let me know if you still need help!