Geocortex Analytics - .aspx Website Tracking?

Hello,

Is it possible to add older .aspx websites to monitor in Geocortex Analytics?  We have a clunky, old and volatile app that frequently crashes that I'd like to monitor usage so we can 1. Restart the server when it dies and 2. build a case to replace it.  I don't have access to it so I can only track as a website and not a web app.

I'm trying to add it like I have other websites, but I'm getting a generic error that I can't tell if it's my syntax or if it's not compatible - see below.  Thanks!