Wii U Tv controller help

This is a long shot, but I have a Foehn & Hirsch tv, (Ebuyer UK own brand), and I can't get it to work with my Wii U Gamepad in tv mode.

There is a 'Foehn & Hirsch' option in the menu, but that doesn't work for my tv and I was wandering if anyone has found a compatible tv from the list that works?

As I said, it's a long shot

Thanks.