That's weird. You should be able to pay upfront with a credit card. Start the File tab over. How to pay the fees,
https://ttlc.intuit.com/questions/1901301-how-can-i-pay-my-turbotax-online-fees
Maybe say you want to print, that will make you pay first.
How to get the Partner discount
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-get-my-turbotax-affiliate-partner-d...
