I forgot my username for write.as and I can't log in right now

Hi. I forgot my username for write.as, and even though I found a receipt in my mailbox and got a username on the invoice&receipt, when I tried to log in it told me that the user does not exist (it could be because I had created a new blog name under my orignial blog and the latter one became the one I paid bills for). What should I do now to log in? Is there any way to log in through email address?

Just sent you a private message with your username, based on the email address you’re using here.