I've setting up a registration for one of my zoom meetings. When someone has filled in their details and clicks on the register button, nothing happens and they cannot complete their registration.

I've looked through the settings and I can't find any thing obvious as to why this is happening.

Does anyone have any ideas?

Thanks 

I downloaded the latest version of Zoom on Monday. I noticed that my personal version (app) is the newest version now. However, when I go to attend classes- which is just a link via Canvas, I no longer can use my computer audio headset. When I go to test, zoom freezes. Could this be because the school's version is not the most up to date? This was happening before as well, I was able to restart and it would work. 

The following issue appeared till now during 3 or 4 meetings. About 40 participants were in the meeting. Beginning was fine without issues. Discussions were ongoing for about 40min again without issues. The participants switched the microphones on and off as soon as they took part in the discussion. After 40 minutes, some participants could suddenly no longer be heard, or could only be heard with a few words, despite the microphone being switched on. The problem extended to almost all participants. A few, on the other hand, could still be heard without any problems. Internet connection was very good all the time for all participants and the videos of the participants had no quality loss at all.

The meeting is a jour-fix, always with the same access data for about 1.5 years. Participants use all kind of hardware (tablets, windows computers and mac‘s). 

What could be the issue and how can we solve it?