Hi Adnan,
Usually the postage charges is paid manually using the USPS plugin, unless you’re using a different plugin like stamps or easy post. But again we really can’t be sure about it. Could you please give us a confirmation on this.
Also raise a ticket in xadapter support with the USPS message saying that it will deduct the postage using your credit card, Please blurr out the card number.
We can approach the USPS team if they had changed the policy.
Regards,
Lorenzo
Team Xadapter