Teamviewer ios app --> no sound from PC desktop

Hi the Community,

I have the issue in the subject having the latest version of the iOS app (I think 13.0.89402) in my iPhone X and the latest of desktop HOST installed (13.0.6447) in my Windows 8.1

Something weird, I think it worked a couple of times with the same app having the old HOST version 10.0.36244 some days ago.  But then not anymore, that why I've updated the host version but with no success.

What can I do? Is it a bug?

Thanks in advance for reading and for any help :-)

Kind Regards,

Nuv