Hello Hayrunnisa Ö,
Thank you for reaching out to the Microsoft Community. My name is Eunice, and I'm happy to help.
I am sorry you are experiencing this problem. Changing your display name in Teams is a straightforward process. Here's how to do it:
- Open Teams: Launch the Teams app on your device.
- Click on your profile picture: Located in the top right corner.
- Select "Settings": From the dropdown menu.
- Click on "Account": In the settings menu.
- Edit your display name: Enter your new name (your real name) in the "Display name" field.
- Save changes: Click "Save" to update your display name.
Your new display name will now be reflected in Teams, and you should be able to use the app without any issues related to your display name. If you are unable to change your name, you can contact your school's IT admin to assist you.
Let me know if you need more help.
Regards, Eunice