3cx version Version Number - 18.0 (Build 749)

[Murat GÜMÜŞ]

3cx version Version Number - 18.0 (Build 749), after updating to this version, the application only works through the web panel, we make a call after creating a user password and logging in, but there is no voice communication at all, the phone rings, the other party picks up, but communication cannot be established, microphone headset permissions are required. I looked, they all seem normal, I can't downgrade the version, so we can't use 3cx right now, what can we do about the issue?