one of my courses have been removed im having trouble accessing it
I'm not sure if you realized it or not, but you posted your question to the global Community of all Canvas users. As such, we don't have access or information about courses you have signed up for and when you might see them within Canvas.
What I can recommend is reviewing the documentation below about how to use and customize your dashboard and courses within Canvas. If you're unable to find your courses after that to contact your schools help desk, advisor or registrars office to inquire on when your courses will be view able for you in Canvas.
How do I customize my Courses list as a student?
Retrieving data ...