I know we've had MANY complaints today of students having problems joining Zooms (Zoom error code 3000). Zoom finally acknowledged the problem at 12:33 PM today and they are working on the issues:
Issue with Web SDK and Web Client:
Investigating - We have received reports of a subset of customers who aren't able to join meetings through the Web Client and Web SDK. We are currently investigating and will provide updates as we have them.
Oct 2, 12:33 PDThttps://status.zoom.us/