Kindly note that here on Microsoft Q&A forum we mainly focus on Teams for Business questions.
From your description you may be using Teams for Education.
I would suggest posting in the corresponding Microsoft Community or contact support for better support.
Thanks for your understanding.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.