S3 Supplementary Capital Gains Report Limited to 1 page in PDF file for records.

I tried to logon to my 2020 return but access has been discontinued although it appears as an option on the website. The PDF tax file provided by TurboTax (which I downloaded in 2021) does not include all my capital gains entries which shouldn’t be permissible.  I missed entering a security but it’s hard to verify since so many transactions are missing.