I have the Fios quantum gateway plugged into my ONT with ethernet, as well as two of the WCB6200 extenders connected via coax. They all have the same SSIDs and passwords. For whatever reason, my wifi accessories such as my HP printer and airplay speaker have trouble communicating between the three access points. I will sometimes have to ensure that my laptops/smartphones are connected to the same accesspoint as the accessories in order to use them. I've tried connecting each accessory to an accesspoint via ethernet, but that does not help. I've tried resetting the extenders and router to factory defaults and setting them up again, but nothing has worked. Does anyone have any advise regarding this issue?