Not sure what FlyBox is. Does it require port forwarding? I have to use port forwarding to connect to my security DVR using no-ip for a remote connection. When setting up the app on my iPad, I use the no-ip address xxxxx.ddns.net (xxxx is the name selected) and the port number that the DVR is assigned to use. In the router, I set an address reservation to have the DVR's MAC address to always be assigned a specific internal IP address. Then in the virtual servers section, I assign the DVR's port numbers (it uses four ports) to the selected internal IP address. You may need to use UPnP. After making router changes, power cycle the router and the device. Also use a different port for port than 80 for port forwarding.

@ACM_91 

 

I think the issue may be related to the carriers IP network. I believe even though you get an IP from the carrier, that may still be an "internal" IP address. I would reach out to your carrier and see what they may say in regard to accessing an internal device remotely using their carrier network.