FAQ: I have a license, but how can I edit the text with BoonEx links on About us, FAQ and other Dolphin pages?

The license actually removes only the box with the "powered by" info. All else on any site can be modified at will with a free license, but it takes a paid license to remove that box.
Those links you mentioned (About us, privacy etc.) are able to be modified at any time and are left there for your use - like a placeholder. The old Dolphin 6 info on the trac shows you how to do this. Here is a link:
http://www.boonex.com/trac/dolphin/wiki/GenDolFAQs#HowdoIeditthewebpagesAboutUsContactUsPrivacyTermsFAQ

Go to admin > settings > languages and in the window (near bottom) type in the string to search for and you get several results. Select the correct category (using the Dolphin 6 examples) and alter as needed. Save your results and that should do it.