MdmBarbarella,     It sounds like it just can't enumerate the page correctly, which is likely due to the tool not being validated for the beta version of Edge.    Let me know if this helps.    
After upgrading to Version 3.6.0 (Build 41) in Edge Beta the device list ist empty. Strangely enough the Compliance View the servers are available in their baselines. The device tab shows up as seen in the attachment. Cleared the cookies, but that doesn't help. In Firefox an Edge current version all things are fine. Greetings Barbara [IMAGE]
Edge Beta, device list is empty