What version of MHFU do you play?

[LunaMoo]

Yeah as mentioned Coldbird's server doesn't really need such codes as it already does that via it's built-in database.

I belive PPSSPP built-in server only has this short list ~ just 2 example games each swapping one region actually one swapping 2 regions, another not doing anything;p.

Problems playing with others would be either client side as again ad hoc is unfinished and pretty messy and/or connection issues, maybe firewall or something else blocking either you or the other person or just trying to play with person on the other side of the world which is less than ideal. Without cross-region play you wouldn't even see players from other game versions online.