No ring gs3 t999

Hi all. I am running MK71.2-dt2mo-201802160310-nightly on my tmobile Galaxy s3 and the phone will ring on incoming calls but it will change the volume to off when I’m not looking. I’m not sure what causes it to turn the volume all the way down, but I’d like to fix this.

I can’t remember how long I have been having this problem, or if it was always there (since installing mokee).

Any help is appreciated,

fixed with Volume Control app in Play Store in case anyone has the same issue