Company uses different email addresses internally and externally

I have received a beta invitation. However, my company has 2 email addresses. One that is used internally and one that is used externally. I received an invitation to the internal email, but I have to log in with the external one because it is on file with Adobe. Because of this, I can't use Firefly Beta because the email address that was registered with has to match the login. Is there any way to change my invitation to the "correct" email address?