I cannot access the web UI from my PC via the Pi’s IP address http://192.168.0.32:8384/ and also cannot locate any syncthing .config file when I searched with WinSCP. I also tried turning my firewall off.
The config is in ~/.config/syncthing/syncthing.xml for the user who started it. By default the GUI is only listening on localhost, so you’ll need to edit the config file or use an SSH port forward. What to edit etc is somewhere in the FAQ, I think.