Are you using the older (and simpler) synchronous "Charges" Stripe API? Many non-US payments require a text message for verification by the card holder. Using t

Are you using the older (and simpler) synchronous "Charges" Stripe API? Many non-US payments require a text message for verification by the card holder. Using the asynchronous "Payment Intents" stuff should fix that. I recently switched, and it dramatically improved the charge success rate for non-US customers.