Certiport MS Office Certification Flagged as Malware

We use Certiport’s Microsoft Office tests in our high school computer labs. When the software tries to update, Avast is flagging it as malware. Attached is a screenshot. I went in and did an exclusion for the URL it shows, but it is still being blocked. How can I allow these updates to go through?

You can report a possible FP here: https://www.avast.com/contact-us.php?subject=VIRUS-FILE