I was taking a course and I had to stop. I am now retaking it and they have given me a new join code. How can I add it to my existing canvas account. I do not want to do a new registration because I have to use the email that is currently linked.
If the original course was completed and closed out, and a new instance of the course was created, then you are essentially starting over. Instances of a course do not share student submissions or grades.
You could try contacting the Canvas admin to see if he/she can recover material from the previous instance of the course.
Retrieving data ...