Removing blockages on credit card payments
Stamp Me uses a US-based financial intermediary to process credit card payments. Despite this, some banks automatically "block payments" on their issued credit cards when the receiving company is based overseas.
This restriction can easily be removed in a number of ways.
1. Contact the bank that has issued the card and ask them to "whitelist" Stamp Me as a destination account.
The phone number to call is usually on the back of the card.
2. Some banks issue two credit cards. One for domestic and one for international.
If that is the case, please use the international card. Contact firstname.lastname@example.org and request that a credit card update link is sent to you to securely update your details.