Hey guys and gals please be patient with me its my first post on reddit.

Ok I've recently moved into a new flat and for reasons unexplainable to me no ISP is willing to run a cable into the flat. I had to resort to a 4G LTE router (tp link archer mr200) with a sim contract on threes mobile network. For the most part it's fine I have unlimited data at a 50mbs download and 20 upload.

Sadly the happiness of a cheap easy to use network ended when i connect my xbox one to the router and I have a strict NAT (NAT description - nat behind synthetic port).

I've tried the usual static IP and port forwarding with no luck, I then tried adding my console to a dmz... Still no luck :-(. I fear the issue may be out of my control and within threes network is this most likely the issue or is there anything I can do to fix this??

Any advice is greatly appreciated, Thanks Dan