When attempting purchases through the Epic Games Store using your saved Xsolla Credit Card, there are some known errors that cause the transactions not to complete.
If you would still like to use the payment method, you can remove the Xsolla Credit Card from your Epic account and try your purchase again.
To remove the payment method, go to the payments section in your Epic Account and click the trash can icon next to the payment method you wish to remove.
If this does not resolve the problem, please contact support.
Let us know how we can help you.