I followed the instructions to try to open TurboTax Premier 2020 on my 2011 iMac: made sure my preferences were set to allow downloaded apps from both Apple and identified developers. But all I get is the message:
"You can’t use this version of the application “TurboTax Premier 2020” with this version of macOS.
You have macOS 10.13.6. The application requires macOS 10.14 or later."
And my 2011 iMac does not allow any further OS upgrades. So now I've paid for software that I can't return and can't use. Any more suggestions?
