Creating an account on Steemit with identical name to the domain is not a verification.
Anyone can create Steemit account with any name.
We deal with too many ID theft on daily basis, so we would recommend confirming your authorship on your website as soon as possible. Or you can e-mail one of steemcleaners members from e-mail address used by this domain.
If we don't receive verification, we would need to start blacklisting your account.