I no longer see a course I took in the past
You'll have to contact your Canvas Admin. There are dates set to specific terms, which likely explains why you can't see a course you've had in the past. Can you contact that person via the Help portion of your main menu?
Hi, DIEGO FERNANDEZ and Welcome to the Canvas Community! Lisa has given you great advice; you'll probably need to check with your local Canvas admin to find out where those courses are. Before you do, click on the Courses link in the global navigation and then on All Courses to see whether the courses are now displaying in a Past Enrollments list. This is described in How do I customize my Courses list as a student?
Retrieving data ...