When you say hacked, do you mean that someone spoofed one of your devices and placed calls out, or did they physically gain access to your Allworx system? If the latter, this would be the first that I ever heard of that. What exactly did you change passwords to? Generic SIP devices, Allworx handsets, or both? Usernames cannot be changed so VM to email should not have been impacted. Are you still experiencing issues?