If Turbo Tax makes a mistake with consistent numbers for a Federal and State documents, should I contact my lawyer to sue Turbo Tax or Revenue Services to investigate?

If there was a systemic error with any type of calculation on a Federal or State tax return, the issue would have been corrected long ago due to the impact on tens of millions of tax returns completed using the TurboTax software annually.

If you wish to make a claim under the TurboTax 100% Accurate Calculation Guarantee then see this TurboTax support FAQ for instructions - https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-submit-a-claim-under-the-turbotax-100-accurate-calculation-guarantee-or-100-accurate-expert/01/26065

See this TurboTax support FAQ for when access to prior year online tax returns expire - https://ttlc.intuit.com/community/prior-year-return/help/when-does-access-to-my-prior-year-turbotax-...

You can also get free transcripts of your federal return from the IRS - http://www.irs.gov/Individuals/Get-Transcript

For a fee of $50 you can get a complete federal tax return from the IRS by completing Form 4506 - http://www.irs.gov/pub/irs-pdf/f4506.pdf

You will not be able to upgrade to the Plus edition for tax year 2018 since the TurboTax online editions for 2018 have closed to make way for the 2019 online editions.  Once the 2019 online editions become available in December, at that time you can start a 2019 return and upgrade to Plus.

Or contact TurboTax support during business hours and see if there are any other options available for accessing a prior year online tax return.

Support is open from 5am to 5pm Pacific time, Monday thru Friday

Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax