svEngineer:
First, welcome to the WeatherCat Forum.
Second, it will be very helpful to the rest of us if we had enough information about your setup to comment. What version of WeatherCat are you using and what version of macOS?
Third, Wunderground is in a sad, long, downward death spiral and almost all of the recent communication problems are on their end. They are under new ownership and management and I suspect have terminated the employment of all of the people who knew what they were doing.
Fourth, having said all that, many people are reporting that communications are now much improved over a few months ago, so don't despair. Tell us what your setup is and we'll see if someone here can help you.