I have 3 KC100 cameras which have worked perfectly well for over 2 years. about a month ago two of these cameras began dropping off wifi & my phone. now I can choose to connect to 2 at a time but never all 3 at once. When I search wifi networks, I have 2 different Kasa wifi networks to choose from. one will catch cameras 1 & 2, the other will catch cameras 1 & 3. however camera 3 which is the farthest from the extender is available only for live and is not accessible in the recording page. 

I did not buy all 3 together and cannot be sure all 3 are version2. but they used to all work together until recently.