Accessing NextPVR media server remotely via mobile phone

[#1]

I am using an application called NextPVR on my home PC to record TV. There is an option to allow remote access via their media server client as part of the software. . I want to use my phone to access Next PVR so I can schedule recordings or even stream to my phone. Having contacted their support I have been told I need to set up port forwarding " You will need to tell the router in your home to send traffic that is incoming from the Internet to the NextPVR port, 8866, on the IP of the NextPVR server ... probably 192.168.something.
The router may have settings titled DMZ to facilitate this"
I'm new to all this, so can I achieve this via my Plusnet home hub router? Any steps required much appreciated thanks!

[#2]

Anyone?

[#3]

Thanks for getting in touch @adeski.

I'm afraid we aren't able to assist with port forwarding issues as they fall outside our remit however you can find instructions on how to access the port forwarding section of the router here