Sometimes a join link doesn’t work, and Google asks for a class code instead. This can happen if:
You open the link in a browser instead of the Google Classroom app.
You are signed into the wrong Google account (e.g., personal Gmail instead of school email).
The link is old or broken.
Your school admin blocks outside accounts.
The teacher disabled the link.
✅ Quick Fix:
Always open the link in the Google Classroom app.
Make sure you’re signed into the correct Google account.
If it still asks for a code → ask your teacher for the class code.