firefox doesn't open up any windows, even though it is on and its top menu appears, but the menu does nothing
Firefox doesn't open up any windows, even though it is on and its top menu appears, but the menu does nothing. It happened after I hid it while working on another app, and it would not re-appear. I uninstalled that version and re-installed the latest version from your website, but it's having the same problem. I went to disk utility (on my 2020 iMac running 11.7.10) and it showed nothing wrong/corrupt on my hard drive. Is the problem my old OS? Thank you, Alicia