I have 4 foscam cameras 2x FI9851P and 2x FI9851P. I can connect to the 2 FI9851P with no problems. I can only access the 2 FI8919W when on the same wifi network. I have tried fascam support and got nothing. Also I can not connect to the same 2 cameras with the app at all. I'm at a total loss. I have latest firmware, DDNS is setup and says it was a success. I have set IP addresses at the cameras and my port is open.