I have used TeamViewer for years to help my Mom (who lives 3000 miles away). It lets me see and control her screen. But TeamViewer stopped working (long story) and I am seeking a replacement. Her Mac is old (a 2007 iMac running El Capitan and not able to use anything more modern) but it’s otherwise perfect for her.
I tried using Messages but apparently that OS doesn’t support screen share via Messages. Apple Support was awesome and worked through getting Messages working (another long story) but we could not achieve the shared screen.
Now, I know even back then, there was built-in VNC in the OS but I don’t know how to make that work, especially since I have to talk my 87-year-old Mom through the installation on her end. She’s sweet but computers are not her jam.
Or, maybe there’s a third party app that does it more easily, through the browser or other magic?