You suggestion of following the port forwarding at the following link
https://forum.peplink.com/t/how-to-configure-inbound-port-forwarding/8268
It says " go to ***Network>Inbound Access>Servers>Add Server to define a new server."
my version Firmware does not follow as the same paths, my firmware version is
7.1.0s021 build 2883, there is no mention of “Peplink Balance” in my version
That is one of the things that is so confusing about Pepwave in general
under my version, under “Network” there is no "Inbound Access"