Greetings,
just bought a second hand 2630L in good condition.
The camera had a flawless setup and binding to the mydilnik cloud service.
Video feed is excellent, the speaker is working for use of a two way audio, but the microphone transmits no sound

I tested with mydlink+, the new mydlink and the tinycam monitor pro app, from all of them I can hear a quiet hush, but no distinctive sound.
When trying the two way audio, the hush changes a little bit, but no words or noises can be recognized.
The mydlink+ app has two way chat option, which I enabled and disabled in row, but no results with either setting can be produced.
I setup the camera with the same mydlink+
Tried reset and factory defaults with no luck.
When talking to the camera, I can hear my echo /feedback/ from its speaker, which leads me to the conclusion that the microphone is working?!
If anyone has any idea how to start the sound transmission?