Well, I did not get a reply but I did find two answers that may help someone else:
1. My iMac is a mid-2011 machine running OS 10.13.6 High Sierra. TT 2020 Home & Business requires 10.14 Mojave or later. Apple does not allow updating High Sierra to Mojave. Is there a cheat that I can use to download Mojave? No, because my graphics processor, GPU, is incompatible with Mojave.
2. I bought my TT 2020 Home & Business at Costco. I opened the package to get the software license code. Chat at Intuit said I can still return the opened package to Costco. That is what I'll do.
A third question is can I run an on-line version of TT 2020 Home & Business? Intuit offers an on-line product but it does not have the same name. I don't know if I can trust it to complete my taxes.
