I did reach out by phone and the support person also wasn't able to fix my Recovery Rebate Credit Worksheet or trigger Turbo Tax to ask these questions again.
They advised that I can file the a $0 amendment with a comment explaining that there should be a recovery rebate credit and hope that IRS reads it and applies it for me. I doubt that's how IRS works.
All I need to do is to set ln 30 on my 1040-X and it sounds like it's impossible using Turbo Tax software and I'll have to buy a different software or file a paper amendment.
