Microm 410 Add Code.

I need to take MICROM 410 for dental school; however, a code is now required to add it to my schedule. I saw a seat open up, but it was taken because I didn't have the code. Does anyone know how I can get this code?

I have already reached out to the department, as well as the professor, multiple times and have had no luck getting a response.

I appreciate any help.

Thank you.