I have to use Microsoft Teams for work. I use the web version with firefox. The audio portion works just fine and the video portion works too. But the screen-share function does not work. I can't see anyone else's screen when they share it.

Firefox always has a notice when I start up MS Teams (attached the image to this post). But when I click on the "Learn More" button, the bar just disappears without taking me anywhere new. So I'm unable to learn more. Does anyone know what plugin I need or where to download it? I've done a couple of searches and haven't come up with anything helpful so I'm hoping someone can help me solve this problem.