Hello @JenniferCoprero
I understand that you spelled a name incorrectly when adding a student to your course.
To fix this you might need to either reach out to your school's Canvas admin to have them fix the spelling, or you might be able to have the student fix this by having them login to Canvas and clicking on the account button, followed by selecting the Profile option. HERE is the student guide on how they can adjust their profile setting.
Hopefully this helps!
-Colton
