Windows 10: New laptop google meets mic just stops working at random?

So i bought my wife a new laptop for her birthday. She's a teacher and has to teach virtually atm cause, things. It was her birthday and the school provided ~5yr old chromebook was making something stressful, even moreso.

First day she tries to use it, her students cant hear her the majority of the time. It works then it stops working and they can hear nothing. Its like the mic auto mutes itself or something at seemingly random.

Ive done all i can think to do. Voice recorder and other apps get the voice loud n clear. However google meets just seems to not want to pic up the mic the majority of the time.

Anyone seen anything like this? Any ideas what i can do to narrow down whats going on? She's using it as we speka so i cnt get the exact model but its a Dell w/ a 10th gen intel, inspiron 7000 series or something.

:)

 

New improvements to layouts in Google Meet

Source: G Suite Updates Blog: Improvements to layouts in Google Meet

 

New user setting to hide or show Google Meet in Gmail

Source: G Suite Updates Blog: New user setting to hide or show Google Meet in Gmail

 

Headphone mic not working with laptop 3.5mm port

I have sennheiser hd4.40 wireless headphone. I also got a cable with headphone having 2.5mm pin(attached to headphone) to 3.5mm pin(attached to mobile phone).

Problem is that when i connect 3.5mm pin to my mobile phone headphone jack, in call i am able to use mic and headphone both at same time but:

1. When i connect the 3.5mm pin to 3.5mm jack for mic on my laptop, i am not able to use the mic.(my laptop has separate 3.5mm mic and 3.5mm headphone jack)
   
2. When i connect to 3.5mm jack for headphone, only headphone is working with laptop not mic.
   

Please do not suggest why I am not using Bluetooth because it is a separate problem.

I am missing something or maybe this may be limitation or something else. Help me on this. :-(