OCI Upgrade to paid fails with an unintuitive error

Hi Team,

We are unable to upgrade the OCI tenancy for the account name stackport to a paid account.

The credit card used is enabled for international transactions, and the same card was used while creating the account.

Could you please review this issue and help us complete the upgrade? If there are any prerequisites, account restrictions, or additional steps required, please let us know.

Appreciate your help.

Regards

Atiq M