I want to upgrade from High Sierra to Mojave, Apple sent me to their store, but...
I have the necessary hardware. But when I got to the Mojave page in the Mac store, instead of offering a "download," it said "open," when I tried to open it I got a message that the file was damaged and couldn't be used to install the software! What going on with the app store?
iMac Line (2012 and Later)