The PanDigital Novel and ADE have always been compatible; however, as PD as a hardware company essentially dissolved earlier this year, it's highly unlikely that you will find support for technical issues outside of forums such as this.
Troubleshooting connectivity issues is fairly straightfoward, but it needs to be reitrated that ADE AND THE PD NOVEL ARE COMPATIBLE.
The same steps used to connect devices such as the non-HD NOOKs, Kobo, Literati, etc. can be effectively used to connect to the PD Novel. This was the case with ADE 1.7.2 and continues on wth ADE 2.0.