If access to your 2017 return file is locked, and it asks you to pay, then the minimum payment to unlock it is to pay for a 2018 return in PLUS (19.99) or a higher paid edition in the SAME account. What did you pay for, and was it by credit/debit card?
You appear to be using Online Deluxe, which is 59.99 for Federal (and 44.99 for state, if applicable). Payment for the Federal return should unlock prior returns. Is Deluxe what you are using (or used)? If so, did you pay the 59.99 by credit/debit card? And is the 2018 return in the same account as the 2017 return?
Have you already filed your 2018 return, or is it still in preparation? If already filed, did you use Deluxe? Or did you try to upgrade after filing and upgraded too far?
We can tell you what to do when you answer all the questions above.
