Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
What do you mean by "stops updating"?
Nothing changes on the screen or does it fail to load?
As far as I can see from here with local testing, UPnP is working OK and the status page is also working.