Please consider updating the 2checkout payment gateway to include the inline checkout experience, so the interface doesn't redirect to their website and instead show as an overlay to our sites.

https://verifone.cloud/docs/2checkout/API-Integration/Legacy-API-versions/Legacy-2Checkout-API/Hosted-Checkout-API/Inline-Checkout
https://www.2checkout.com/lp/inline-cart.html
https://verifone.cloud/docs/2checkout/Documentation/07Commerce/InLine-Checkout-Guide

Also, please fix the "pay with 2checkout" broken icon/image as showed in:
https://www.blesta.com/forums/index.php?/topic/16879-issue-with-2checkout%E2%80%99s-images/

Regards.