If you find an error in your recorded homework grades take a photo of your correct grade and the problem it is for and email it to your homework grader for correction. (Not applicable to CVEN 221 or 305)
If you need to set up a help session with the Teaching Associate outside of their normal hours of operation, email the TA for your class and see what they can do:
Homework Graders: Graded by McGraw Hill
Teaching Associate: Yan Zhou