IE Explorer Mode

Update:

I decided to wait for a few updates to see if anything changes. I then went and undid everything and followed along with the most up-to-date instructions which then I eventually found the download for Enterprise Mode Site List Manager and utilized this tool to help me generate the schema v2 site.xml file. Now, IE Mode seems to be working.

However, the Company I work for has a single Client that is forced to have us connect to the VPN via Dial-Up... IE Mode seems to fail miserably with Dial-Up. 

Not sure if this is something that would need to be looked in to or if IE Mode will not support Dial-Up connections. When I removed the site I needed to access through Dial-Up it worked as normal. So I tried it a few times through enabling, restarting Edge Dev and disabling it on the site list and yeah I have seemed to found that when a Clients Site is added to my Site List that it can no longer be accessed through Dial-Up but when Clients Site is removed from the Site List then it works as intended.

I also do know who I would need to tag in order to get this across to a support team to be looked into or if it is a known issue or not.