Hi @medran,
Sorry for the frustration this has caused. However, please kindly understand, as it’s been explained a few times already, that theirs is the only theme that is having issues with this, so it’s out of our hands to make changes to our plugin to account for an issue it for a single theme from a third-party developer, as per our support policy.
Regarding our files, they can verify anything they need to assure compatibility in our public repository here: https://github.com/woocommerce/woocommerce-gateway-stripe/.
However, if they can’t fix this, I’d like to suggest another path to move forward. Have you considered an alternative payment method for Stripe, perhaps? Would you be interested in trying our very own WooPayments? Here is a nice comparison between the Stripe plugin and WooPayments for your consideration: https://woocommerce.com/document/woopayments/compatibility/woopayments-vs-stripe-plugin-comparison/.
Cheers!
-OP