Can I upgrade an iMac (Mid 2010) with Yosemite to Catalina?
Recently, I have been unable to access a website (Duolingo) I have been accessing for over a year. When I try to access it now, I just get a blank page. I presume the website has incorporated changes that are not supported by my current OS (Yosemite) or the version of Safari (10.1.2) on my computer.