@WD2 , here’s what worked for me, hope it does for you.
I created an account on the IRS website using ID.me. It is a bit involved process, it asks you to scan your drivers license, and then take a selfie of yourself from a phone and asks you to upload that also. I went into my previous tax return transcripts. The IRS website asks you what you would like to do on the website, and you can indicate that you want to download previous year's transcript. From there, you can download your 2020 tax return transcript.
For filing your taxes, use the AGI from there, and your return will get accepted.
