Clicking on 2018 and choosing download tax return gives me the following:

"

Download your past TurboTax returns

Looks like you didn't file with us last year or you filed using a TurboTax product that doesn't include access to prior-year returns.

To download your prior-year TurboTax returns, just get started with your 2020 tax return in the TurboTax product that's right for you."

The statement that I did not file with Intuit last year is accurate (as I have been on disability since 2020, I haven't filed a tax return at all since 2019).

Will attempt calling support tomorrow.