I installed the latest release on my Mac mini (Late 2012) running MacOS 10.15.8 After startup, the system reported that it could not run the application because it was not compatible with this version of MacOS. Clicking "Ignore" caused the dialog box to appear again in a few seconds. I think it was the server process that was incompatible, as it looks like the app package was running (showed as Syncthing in Activity monitor, and the Status icon in to top bar was active, showed the server process was not running. Installing the previous version (1.30.0-1) restored functionality.