I was able to resolve the problem. I clicked on "view payment options" on the bottom of the pro forma invoice. That took me to the "how would you like to pay for TurboTax" screen. There I saw message that said "Unfortunately, you’re not eligible to pay for TurboTax with your refund because you have a foreign address and your federal refund is not large enough to cover the fees. You can continue and pay your TurboTax fees using one of the methods above." I clicked on the "pay now" button to get to the credit card screen, then backed up 2 pages into the pro-forma invoice and the $40 charge was gone.
Thanks for your help.
