Thank you for your report!
Unfortunately old AVD version is not supported by Firefox 57 and beyond anymore, thats why new AVD 3.0 was completely made from scratch and still need a lot of fixes.
At the moment our main task is to return a support of as many types of streaming video as possible.
Design is the easiest issue here and we will rebuilt it after few successful AVD 3.0 releases
Our developer will be grateful for direct links with any detection problem to our support here: https://support.ant.com/hc/en-us/requests/new