I have a Polsen USB mic that we plugged in for a zoom webinar.  When just two people were in, the audio was fine.  We went live and a 3 presenter joined plus 50 attendees.  The main mic started to crackle.  It seems to be some issue with the audio compression that Zoom employs.  Anyone else have this issue and what is the fix?

I am running webinars on a regular basis as the zoom owner and always with one panelist and normally around 150 attendees. I always have a test with the panelist (in webinar mode) before the webinar but more than sometimes the sound during the actual webinar is much worse than the test (which always are good). I have so far not required any headset or mic for the panelist. What is the right set up and tech requirements to avoid the sound problem (video is always ok).

Hosting a concert where individuals play the guitar and or sing . Some have problems with audio settings where the audience can hear them but not their guitar. Seems like some have problems and others not even though they are using the same settings. Wondering if anyone has a recommendation for audio settings to resolve this issue. 

Can anyone tell me if the button to report inappropriate behavior is available in webinars.  In meetings, this appears in the Information dialog, which is reached by clicking the shield icon up in the upper left corner.  We need to be able to use this feature to help stop people spewing out hate speech at our public meetings.  The documentation seems to be unclear as to whether this feature is available for webinars.  I am looking at this page: https://support.zoom.us/hc/en-us/articles/360042791091-Reporting-inappropriate-behavior

It says how to do it for meetings, but then later says if the meeting or webinar is over, use the web form.  We need the button to be active during the webinar, if it is available for webinars.  Thanks in advance!