Do you have a wordpress.com blog? If so then is your question pertaining to it? The reason I’m asking because you have linked your wordpress.com username to a commercial site.
We provide support only for bloggers with wordpress.com free hosted blogs here and our blogs are non-commercial blogs.
To answer your question, assuming that you are speaking of a wordpress.com blog, wordpress.com software will strip out all forms that you try to embed in order to preserve security on this multi-user blogging platform.