I can't sign in into Microsoft Teams! Please HELP!

I use Microsoft Teams for college and the school gave me a school account to use on Teams, but now all of a sudden I can't sign into Teams! It's so annoying! I tried so many times, but it stopped logging me in. When I sign out and sign back in or press try again. The desktop app goes blank and disappears. Please help! Here's the screenshot of my recent try to sign in: