Set up the RE505X range extender using WPS as per instructions. This took several attemps and a reset before it appeared to be successful. I then relocated the extende and waited for it to stabalise which took severall minutes. At this point all devices registered in the Tether app disappeared and when I tried to login to the Router web page in a browser it said it was disconnected, which was incorrect. I powere off the RE505X and and the router and other apps returned to normal. Is there something I've missed? I followed the installation instructions but whatever I try this extender messes up my whole network. I have an RE200 which works well so I can only assume the RE505X is faulty.