Wifi problem is seen as difficulty in linking up, usually in the phase when the app is trying to "binding", or as dropping out of wifi connection. I could link up to the Wi-Fi but the camera frequently dropped out and was often difficult or impossible to reconnect. I also noted another device (LIFX bulbs) occasionally dropped out and the problem with LIFX has been around since I upgraded my router from ASUS DSL-AC68U to a ASUS DSL-AC88U. The newer router seemed more advanced and I suspected a new function may be the cause. I found out that these problems disappeared if I changed the Wifi setting “Channel bandwidth” in my router from “20/40MHz” to “20MHz”. The camera (and the LIFX bulbs) works fine after this adjustment. No drop in wifi connection. I hope this information is useful for others. I wonder if D-Link can use this information in a future firmware upgrade so others wont see this problem at all.
