Safari Compatibility with FTH

Good morning, everyone!

As webmaster for our club, I've volunteered to keep track of meeting roles, and then reconcile each agenda for our VPE to use for reports.

I'm using a Mac mini 2018, running macOS Catalina 10.15.5 and Safari 13.1.1

I noticed that no matter how many times and ways I tried, I couldn't get that 'reconciled' check box to stay checked. Then on a whim I tried a HP laptop running Chrome, and...that worked.

Prior to doing this posting, I tried to search the forums for a compatible browser list (which I should have done at the get-go), (using my Mac), and I noticed that Safari was not parsing the html on the search results, though it does in the forum posts themselves.

Am I right in thinking that I'm incompatible?

Safari is always a problem with compatibility, Apple does not follow the same standards as everyone else.
I use Firefox and chrome on my MAC and Apple devices.