hi

because a legal signature is required, and as such, that would be the name on your legal brith certificate. can only tell you why they will not accept the signature and what to do if this is how you wish to sign legal documents.

the section of the UCC that you refer to in your signature is not applicable to legal government documents - it is there as a provision for someone who enters into a contract that is also governed by the UCC

§ 1-102. Scope of Article.

This article applies to a transaction to the extent that it is governed by another article of [the Uniform Commercial Code].