@nineoc - it sounds like a fun setup
For the Amiga what Network software are you using, Miami, Roadshow etc? (OS 3.5 has one built in too). Unlike MacOS and Windows you usually have to start it manually.
Something else to look at (if you are connecting to the network) is the IP address of your Amiga: Amiga Explorer on Windows has to have a fixed IP address to talk to the Amiga over TCP/IP. Maybe moving and having a different network means your Amiga is getting a different IP address. Are you able to see what IP address your Amiga is getting (maybe you can log into the router to find this out) and then right-click the Amiga Explorer icon in Windows to see if they match.
Finally (for now) you have to run the Amiga Explorer client on the Amiga to allow Windows to connect to it, so make sure that's running too.