Left Hand Icons

I used the Whiteboard feature as recently as last week. Today, there are no left-hand icons, so I can't write anything. As a Zoom math tutor, a collaborative whiteboard is pretty important. I'm thinking the screen size got changed? Or I hit something that hid the icons? Talking with support I was told to log out and back on, make sure I had the most updated version, etc. That's all wise, but still no icons! Any suggestions?