Just received the "Update to Dropbox for macOS" message. On reading other messages here I see that while my desktop machine can run Dropbox for macOS because it uses OS 12.6.2, my older laptop can only be updated as far as OS 12.3.1 which is under the 12.5 cutoff.
Should I install Dropbox for macOS on my desktop anyway because the two versions play nice or should I leave the old version everywhere on the "if it ain't broke don't fix it" principle?