i have 10.13 on iMAC. Trying to download more currant operating system. having no luck. went to app store looking for download, but nothing what do i do?
i have tried everything i can to upgrade from 10.13 to load Turbo Tax which requires 10.14 our above. Went to app store and no help there. What do i do?
iMac 21.5″, macOS 10.13
