Hi all, 

We have a TP-link EAP660 HD, which appears to support Mesh, and a RE700X wifi extender. In front of the EAP660HD, there's an ISP router. The EAP is connected via UTP to the ISP router.

I'd like to set-up the EAP660 HD and the RE700X into 1 Mesh Wifi. However, when opening the omada app on my Android phone it only shows the EAP in 'independent mode'. When switching to Mesh mode, it can't find the EAP. When checking the compatible devices in the app, it only shows 3 EAP's (and the 660HD isn't in there). 

Am I missing something? :-)  

Aside: I also opened Omada cloud controller, but also there it fails to adopt the EAP.