Hello!

Please help.

I have a 4G router and I have a static IP address that I have ordered from the internet provider. In the same room I have an installed Air Handling Unit (air ventilation system) with a screen. 

Here is what the guide of the Air Unit says, regarding what should be done in order to be able to connect it to the telephone APP through the WiFi router.

"You will need to change more settings to control your unit over the Internet using your computer.
First, port forwarding must be configured to the IP and port number of the unit 80, according to the
instructions of the network router."

In my router there is no such thing, as PORT FORWARDING, only NAT Forwarding, but it doesnt work as intended, I have tried.

Please help