MinimWatch listening on the wrong adapter?

[Milraine]

Hi
I've been searching the forum posts and cant quite find the answer to this problem sorry. Have been using minimwatch on my mac to control minimsever on synology NAS without problems for about 6 months. Recently had new internet prover set up and although the NAS is still connected to my network via my airport extreme basestation it looks like the minimwatch cant find the minimserver anymore. The icon is just greyed out in the system tray. Looks from the threads that I should be able to tell minimwatch where to look for the sever but I cant see how to do this. Thank you