If you were legally married on 12/31/2023 then you can only file your 2023 tax return as Married Filing Jointly or Married Filing Separately.
If you were no longer legally married in 2023 but used this account to file as Married for prior year tax returns then you need to create a new account with a new User ID.
Go to this TurboTax website and click on Sign up in the upper right to create a new account - https://turbotax.intuit.com/personal-taxes/online/file-your-own-taxes/