I follow the instruction to register but since I am already at Premier edition and I could not go back to free edition do I have to pay before I can register?

[DoninGA]

No, you do not have to pay for any of the TurboTax online editions until you are ready to either e-file or print the tax return.

See this TurboTax support FAQ for accessing prior year online tax returns - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/270...