Is there any helpful information in the log file? It usually contains "the software failed to do this" messages if there are problems.
If there are no such messages, consider the possibility that there is some "do this" option that you haven't selected.
Remember that the main purpose of this part of the WeatherLink software is to use a .htx file (which will have a file date of when you edited it), to create a .htm file (which will have a file date of "very recent"). That .htm file, plus the requested images, are uploaded to a web site.
The created images are usually in a folder \\........\WeatherLink\STATIONNAME\Images\Profile1 (or Profile2 or whatever).
Of course, you are asking WeatherLink to also keep local copies of all of this stuff.
Most of us have never tried to get WeatherLink to just produce the local stuff, without doing uploads. Most of us don't have access to WeatherLink.com data, directly through WeatherLink, because WeatherLinkIP is rather new.
Perhaps, since you're familiar with the field, you can step back, consider what WeatherLink was designed to do, and figure out in your situation how to persuade it to do what you want?