can someone help me understand mapzone2 editor's EULA ?

http://www.mapzoneeditor.com/?PAGE=DOWNLOAD

especially the part about including their rights in the project and textures , I really have difficulty with knowing ,what it is that has to be stated in the project and how it's supposed to be in the textures and project. .

I have been looking for their email address to ask this question ,but unable to access the page from the "contact us" links ..

I am also unable to access the forum.

I am planning to use this free product but with such vague statements in their eula I am left confused.

help would be appreciated .