Audio Not Working In Meetings

Description -
I am using zoom apis for meeting.
I am facing an issue with audio in meeting as host and attendee not able to listen each other.
here are two cases in one case they are able to listen in second they are not.

NOTE - meeting requires registrant
case 1 -
Add attendee as registrant and approve , here when attendee enter in meeting with unique url then audio is working.

case 2-
If i create attendee url dynamically just to avoid the screen of join by browser or app.
then audio is not working.

the url i am creating by passing attendee name in url by base 64 encode

Hi Rohit,

So that we can investigate the meeting quality, what is the meeting ID that you’re using?