The last update to the VWS software was in September of 2015 to resolve some isolated crashing issues. The NOAA downloads stopped working at least 2 years ago. WU's issues are fairly recent and it appears that WU is having major problems of their own. I use WU for very little now because of this.
Just an FYI: You can download the METARs by using the Hamweather setting in "Metar Settings". There were some issues (first time I can remember) over this past weekend but they appear to have been resolved. The 5-day forecast, Mesonet and other WU associated items appear to be long gone. It would probably take a few hours of programming work on Ambient's end to rectify all of these issues, but I digress.....
If you're using just a simple HTML page you can get a similar 4-7 day forecast widget at Meteoblue.com. I've been using it for several months now and I like how the color coded the temperatures in the forecast, which was similar to what VWS was creating. Another option is Weatherforyou.com. They also have a very good 4-7 day forecast you can embed on your site.