@ mwils54
In the interest of time, I'll go ahead and tell you how to reach Support on Monday if needed, but in the meantime try the two methods I mentioned above to recover your account access. Hopefully, one of those will get you back in.
You appear to be using Free Edition (at least that is the product shown underneath your question above.) The Free Edition doesn't normally have free phone support. But since you apparently got an IRS letter you have another option to reach Support by phone by using the following approach:
Since you received an IRS letter, you can use the free TurboTax Audit Support Center to reach a live TurboTax Support agent. Once you have them on the phone, tell them about your letter, and let them know that you need to recover your account access in order to respond to the IRS ID verification letter.
To get the phone number, go to the link below, click the blue "Get Help" button, and follow the prompts.
https://support.turbotax.intuit.com/irs-notice/audit-support/
Hours are currently 5AM-5PM Pacific (8AM-8PM Eastern) Monday-Friday.
