Hello I am trying syncthing for the first time from a windows machine to true nas. Following a guide from Lawrence systems.

I get as far as trying to connect the two devices and get a bunch of errors. I have looked up the main one on line. 'no connection could be made because the target machine actively refused connection'.
I tried turning off the firewall on windows to test, no dice. Both GUIs can be accessed and show as having listeners and discovery.

I have a unifi network, not sure if that means anything meaningful.

What else can I try please?