You can contact the hosts by email but I will also notify them of your request.
From: Apple Support Communities Terms of Use. - Apple Support Communities Use Agreement - Apple Community
For questions or problems regarding your Apple Support Communities account, please post a question in the Using Apple Support Communities site ( Using the Community - Apple Community ), or e-mail communityaccounts@apple.com
By the way, for me the "username" on an "Apple Account" is what is now called an "Apple ID" which is basically the email address you use as your account username. Hence my confusion about what you were asking. Once you said Community username, things became clear.