VOIP not working at all, just my partner can hear me

Hi, I’ve tested over a week with no lucky about VOIP, I’ve follow many tutorials and forum around and always get same result, is weird but just other persons can hear me, I never hear other or others between them, tried in standalone and under Built, by LAN (Null subsystem and Steam one), doesn’t matters who create the party. Their mic input is OK because they use other voip apps like discord without troubles, even when project is launched noticed in Windows 10 the app is using the microphone and allowed.

Can’t understand at all the Log, but checking both logs (mine and my partner) looks like try to assign same user for both:

LogOnlineVoice: OSS: Starting networked voice for user: 0