Step 1. Make sure that you are connected to the camera and microphone in the classroom. If you have access problems, use the instructions in this article.
Step 2. Try to contact the teacher in the classroom internal chat.
On the computer, the chat is located in the lower right corner:
In the application, it opens when you click on the chat icon:
If you still see the teacher and he does not answer you, contact the student support service immediately.