If you join a zoom meeting with a different account name or email (example@gmail.com), the host (teacher) might have trouble understanding who you are.
You can set yourself an understandable name when joining the meeting and during the meeting at any time, from the participants window:
Click the " Participants"
Hover the cursor over your name to access the "More " button
Enter your full name and check " remember my name for future meetings"
Now your full name will appear and it will be easier to be recognized in meetings.