@SongTang ...
You've posted your question in the global Canvas Community website. We can help you with questions related to the Canvas LMS (Learning Management System), but not necessarily questions about accessing your e-mail. I would also suggest that you remove your e-mail address and your student number from your above question to avoid getting spam and to protect anything regarding your student identity.
You should probably address these questions with your school's IT department who might be better able to answer your questions and get you some immediate help.
I hope this will help. Good luck to you!
