Could be a browser issue ... clear your cookies and/or change browsers.

Or your address in the MY INFO section is not the same as the billing address of the credit card.

Or the billing address is a foreign address ... it must be a US address.

Contact TurboTax support and speak directly with a TurboTax support agent concerning this situation.

See this TurboTax support FAQ for a contact link and hours of operation -https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number