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First of all, please try restarting the terminal, changing the browser, etc.

If you created your own Zoom account with your university email address, you may not be able to sign in with SSO.
In that case, you need to change the address of the created account to another one.
First of all, please try to log in as a user with @sic at https://zoom.us.
If you can log in, please change the email address on your account.

Here's a guide on how to get off-campus users to join a meeting.

You can edit a class (meeting) that is already booked.
You can edit an existing class (meeting) that has already been booked.

How to Join a Non-University User

There are two main ways to switch between writing on the board and video.

1．How to use the gallery view

First, click the display on the upper right and select the gallery view.

Then there is a blue square in the upper right part of the gallery view.

If you click on this, you can see the display that the pin is pointed.

When you point to the pin, it will be in the following state.

Finally, you can switch the size of the video screen and the shared board writing screen by adjusting the bar in the middle.

２.How to use swap

First, click View and select Standard.

Next, point to the pin for the camera you want to see. At this time, since the active speaker display is small at first, select the grid view and point the pin at the camera from there.

Finally, select View in the upper right and Swap Video and Sharing screen.