Apple did - pretty much all of 2019. The other poster in that shared thread had upgraded to Monterey. That is another reason I wait 6 months - sometimes it takes FamilySearch "a minute" to catch up. But Catalina or Big Sur with the latest or even next-to-the-last version of Safari should be okay.
As you contact the apple support group, they will tell you that certain hardware configurations for your mac can not keep up with the latest technology unless you upgrade to a newer computer system. Hence purchasing a newer system, even a used one must be able to update to the latest mac-os system when using safari and be able to update your browser to the latest version of that browser (ex. safari, google chrome, firefox). Apple is known for their trade-in option but your system is 8 years old as mine was, the trade-in value is most likely not an option. All browsers have version updates as well that is also based on the operating system of your computer. Wouldn't hurt to try downloading Chrome from your current safari. Search using the chrome browser as it's the best browser for familysearch.org. ** While you're figuring that out, try the Salt Lake Family History Library website and schedule a free 20-minute virtual records look-up appointment or visit the nearest Family History Center for computer use until you're able to get to a local computer tech for solid answers or the next step. Best wishes as you continue your family history journey.
An 8 year old MAC can be updated as the original poster was able to do:
"Thank you very much Melissa. I just assumed that automatic updates would work- it said I was current. I went to the Apple sites and manually downloaded Catalina and Safari, etc. It solves the problem for search! Thanks again."
I'm not sure why he didn't try Big Sur, but, it was recommended to try Catalina first. But, even a 2013 MacAir or MacPro can be upgraded to the Big Sur program. It looks like "Monterey" which released in October 2021 drops off the 2013 models.
Mac users are advised not to use Chrome for a couple of reasons: Apple doesn't support the browser and also because Chrome has little to no tracking protection. But, that is definitely a personal option. For me, I would leave FamilySearch if it came down to making that choice.
When I look at Big Sur requirement it says iMac - 2014 or later. Mine is Late 2013. When I go to the App Store and try to get that version, I get a message saying it is not available.
Correct, I didn't realize you had an iMac. A MacBook Air or a Pro from 2013 could be updated into Big Sur and 2015's can use the newest OS.
At least you were able to get Catalina and make it work. Fingers crossed that will last for a while!
That's the hope