No, I don't know about it. I'm just a volunteer here. But if you can transfer from a pdf it only transfers very basic info like just your name, ssn, address & AGI. Nothing else. The FAQs don't explain it very well. So I wouldn't bother trying to transfer any pdf from anywhere.
Don't know if this will work, but you can OPEN the .tax2021 file you downloaded from Online in the 2021 Desktop program. Then save it as a Desktop .tax2021 file. That may let 2022 Online transfer it. So if you want to buy the 2021 program or ask support for a download.
But Mac may have more snags than Windows. Since you want to use the Online version, I suppose you could find a Windows computer like a friend's or family and try to download the .tax2021 and then transfer it? Might be worth a shot.
