I started to use Whiteboard when it first came out, then left it. Now I am returning to Zoom and cannot see the whiteboard tab in the meeting controls.
I have enabled whiteboard in settings. See attached screenshots.
The first screenshot is for our whiteboard (classic) tool. This whiteboard is used in-meeting only.
The whiteboard option that will show up in the meeting control bar, is our new whiteboard tool. This is a persistent whiteboard that can be used in and outside of meetings. This can be enabled in the settings tab along the top (screenshot attached)