After working with Marvin, before even plugging the URL into a ThinOS policy I tested the URL in native Citrix Workspace for Windows and Citrix Workspace for Linux; it did not work in either. That’s a Citrix issue and not a ThinOS issue so if any of you try the same, you need that to work first before it will work in ThinOS. If that doesn’t work for you, open a case with Citrix and they can assist with your Citrix policy.