Weatheraardvark, note that Pocantico's profile indicates he's using Weatherlink IP. That's on page 21 of the current manual.
I use the free LanScan to find network cameras, Davis Instrument equipment, etc. and resolve IPs. IP Scanner Pro works quite well too but it's not free. I'd recycle the console, remove batteries for a half hour or so and unplug the DC cord if you're using it. And check the ethernet cable from the Weatherlink module, going so far as trying another one if you have extras around. Last, recycle your computer.
If you've already tried all those tricks, and you've reinstalled WC to no avail, I'm about out of quick ideas. Also, update your profile to indicate the versions of macOS, WC and console firmware please to help some of the tech geniuses here on the forum.