I would be glad to help with your port forwarding application question. Here are the step by step instructions:
Port Forwarding Applications
To use any of the common server applications listed, follow these steps:
Install the application on a computer that is connected to MiFi 4510L’s wireless network
Ensure the computer is connected to MiFi 4510L, and record the computer’s IP address for
the MiFi Settings Web UI.
On the Port Forwarding screen, type the computer’s IP Address in theIP Address on WLAN field
Enable the corresponding application on this screen by selecting its check box.
Save your changes by clicking Apply
ClickHome to go to the Home screen, and make a note of MiFi 4510L’s IP address.
Tell the person or company that needs port forwarding to connect to MiFi 4510L’s IP address
of the MiFi 4510L device (by default, this ishttp://192.168.1.1). Connection requests are forwarded to the IP address specified in step 3.
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What app are you trying to use the port forwarding feature for? Port forwarding on LTE devices generally does not work due to the protocols that are used behind the scenes. In most cases your local devices and apps will not be accesible to the general internet like I assume you want to do. The most common examples are XBox Live and network security cameras.
Do a quick check for us. Go to www.WhatsMyIP.org and report back what your public IP address is. We can tell you more from there.