Hi,
Im sorry if the thread seems old but I have exactly the same problem as joustr.  DCS 936L Firmware 1.05.07.  Using Iphone X with MyDlink Lite. Router is TPLink Archer C2.  I followed the steps outlined by joustr.  I also tried to enable both UPnp and Port Forward, but i still cant connect to the camera thru the app.  It connects to the wifi ok.  I can see the live video through the web browser but nothing on the app.  I can also see the camera on the "Local Cameras" tabe but none in the remote.
All I want is to be able to view the camera remotely.
Thanks in advance.
Btw my knowledge of routers and computers is spotty at best so please bear with me.