@Katrj Try logging into your account from another computer. Especially one that is not at your home and not on your internet. Ask a friend or relative if you can use their computer. You know you have to pay first even if you want to print and mail it. Is it not letting you pay? You need to pay with a credit card or debit card.
How to pay the Online Fees. If you don't have a credit card you can get a prepaid VISA card at WalMart or somewhere.
https://ttlc.intuit.com/community/payments/help/how-can-i-pay-for-my-turbotax-online-fees/00/27388
