What is 3DS verification?
When you make a top-up, there could be a message from your card issuer bank asking you to authorize transaction. If verification fails, your bank can reject the deposit request.
How to recognize the issue with 3DS?
You can spot this if verification page is not loading properly, resulting in a blank page or an error.
What can I do?
If the issue remains, please contact directly the Card Payments division of your bank. 3D Secure verification is a security feature on the side of your card issuer, so we do not have any control over this process.
As an alternative, try topping up with the same card using Google/Apple Pay or make a bank transfer.