Remote and head set

Hi yall i have a question. So i was chating with my boy on the xbox controller elite 2 and while we were chatting he couldn't hear me any more. Now every time i try to start a party no one can hear me but j can hear them. The head set works ibtryed it
on my brothers remote and it work. Idk what to do i mean its brand new never droped it, never soaked it or anything like that.

:)