Hi @NoraLara ...
You may not have realized this, but you posted your question in the global Canvas Community website. This is not where your courses are located at your school. For questions about enrollments such as yours, it is best that you reach out to folks at Chaffey College...as we do not have access to your school's Canvas environment or any of your courses. I'd recommend contacting their school's Canvas administrator or someone from their Online Learning / eLearning / Distance Education department. I navigated to this page on the Chaffey College website:
Student Guides and Support (chaffey.edu)
There's a question/answer about how to get technical assistance with Canvas with a response of:
"Canvas 24/7 Help is only available to registered students, faculty, staff. Please login to your Canvas account, and click on the Canvas Help button on the Global Navigation to access all technical support resources."
Hopefully you'll be able to utilize those resources to get the help you need with your courses. Good luck to you! Sing out if you have any other questions about this.