make sure you are filtering ESForces.. not ESPForces.. I had that problem too...
But I'm having another problem... I get the list of ESForces servers, and when I try to join one it tells me that I have to Install ESF, but when Itell it to install the custom game it asks me to overwrite, I tell it yes, and it STILL DOESN'T WORK!!!! and YES I RESTARTED! I'm not an idiot....