I was disappointed to discover that, according to Netgear, I could not use my RKB40 mesh system when I switched to NowTV as it didn't support Option 60/61.
However, I recently updated to version 2.7.3.22 firmware and much to my surprise, the option is now available.
I plugged in my old OpenReach modem and set up the Orbi and its now working perfectly.
You'll need to find out your broadband port MAC address and make up an 8 digit password.
There are a number of posts on here that explain how to do this in some detail.
RussJ
