username?

Not sure if anybody can help with this, it might be a question for the THC webmaster.
When I first subscribed to THC Plus, I got a 6month membership plan under the username magic123.
When this subsciption ran out, I got the recurring yearly plan, but resubscribed under a new username, dreamtime jedi.
While my new username appears on the podcast page, my old username still appears here on the forums.
Not a life or death issue, I just want them to be the same so people will know I'm the same person on both pages. So far I have not been able to find a way to change my username on the forum page.
Any suggestions?