Change username?

Is there anyone associated with Manager Tools that I can get in touch with that can help me change the username associate with my account? For a number of reasons, I sort of need to do so, and I couldn't find a way to do so on the site. If I absolutely have to, I would start a new account and re-sign up for an individual license, but I hate to pay for 2 licenses.

Can anyone at MT help me with this? I'd be happy to PM you with my reasons if necessary.

Thanks in advance for help.