Unfortunately, there is no way to contact the IRS and ask/suggest for alternative methods to electronically file this year. The e-file procedures adopted by the IRS for 2020 are in place and are not going to get changed.
If you filed your 2019 return late last year (after mid-November) or your return was processed after that time - try entering "0" as the AGI. The 2020 IRS e-file database will not have the AGI from your late-filed (or unprocessed), but may accept a 2020 e-filing using "0"
