Your profile is public and is your posted link public as well? Check whether your shared link has a globe icon near the date and time or not. If it appears to be two people icons then your link is only available to your friends.

You could use chrome incognito mode and open the link you gave to the manager to make sure it's working. (Chrome -> File -> New Incognito Window)

If you're pretty sure your link is publicly available then take a screenshot and send it to him.