Sorry to say but your posting permission was removed from the articles section because you were submitting a lot of copied/plagiarized content. As a gold level member, you would be aware that the Webmasters do not allow such content. While we gather information from various sources, we need to present it in our own words and style of writing. Copied and plagiarized content is highly detrimental to the site.
If you wish to get your posting permission for the articles section to be restored, then you need to regain the trust of the Webmasters. This can be achieved by contributing to the Ask Expert and being active in the forum section. If you can, through these sections, prove that you are indeed mindful of the site's rules & regulations & do not violate any guidelines, then perhaps the Webmasters will reconsider your request.