Chan_mobile one way audio

hello i don’t know if there is other similar topic.
I am facing a problem with chan_mobile. I have connected a mobile 9 (paired via bluetooth) to my asterisk-freepbx server, all was fine when i had asterisk 10 and freepbx 2.11. But since i upgrade my system to asterisk 13 and freepbx 13 i have only one way audio when i am trying to call from an extension through chan_mobile device i cant hear the other part but they can hear me. If there is a known answer please give me an advise.
thank you