Needing help with WiFi constantly dropping internet. I bought 3 Deco S4's 2 months ago and they worked great. Here in the last week, all of our iPhones and iPads struggle to keep internet. They have great WiFi signal but no internet. I have ran your WiFi assistant multiple times, it says that internet is offline and ping times out, but all of our Tv's and computers that are plugged in to the Ethernet will work with no problems. The system is  setup as this: the modem, first Deco is the main, second Deco is hooked by cat6 cable and the third is also hooked by cat6 cable. Both of the slave deco use the cat6 to communicate to the main deco. The main deco is in a different building that is where our internet service comes into. The second deco is in our basement and the third is on our main floor.