No Sound recorded

[FireFox85]

Hi. I was testing it out, added my Window (a ppt) as a source and my earphones/mic as my Audio input. But when I recorded there was no audio.
Here's my log:

https://obsproject.com/logs/dAcEPnWLjRe3A5Us

 

[cyclemat]

Blutooth device ?

then use voicemeter