I have only ever used the A3 launcher to join the server. Now I cannot find the server on both the A3 launcher and the Arma 3 launcher. Narrowing the parameters does not help, re-installing/verifying the mods did not help, re-installing the A3 launcher did not help, verifying the game cache through steam did not fix the problem. I tried connecting through the Arma 3 launcher using the IP and port, however it gives me an error message " addon 'extended_base_mod' requires addon 'exile_assets' ".
EDIT:
Solved, sorta.
It still doesnt show up in the A3 launcher, which isnt a problem. My problem was that I had originally downloaded the Exile mod through the A3 launcher to a location that didnt allow it to load through steam, I moved the exile mod to the accepted location and voila.