Trouble With Google Adwords Campaign

Well they have told you the problem I guess. As you say in your post, your quality score is low. So get your quality score higher. I don't know what your site looks like as you didn't say what the site is. But I usually figure that when someone asks this question, they don't have an about me page, a contact page, a privacy statement or a site map and typically they will have just the sales letter and no content other than that. Google is looking for a reason for the searcher to want to go to your site, other than just to read your sales letter. You need to have at least five or six articles on your subject at your site. They don't need to be prominent, but they need to be able to be found from the home page, even if it is through a link to the site map and then to the articles.

If your site has all of these things, then I don't know what to tell you. If it doesn't, then you need to add them and your quality score will improve. At least, that would be my guess.

As Tim said, they told you the problem. Improve your QS. Content has little to do with it. Your click rate is the main driver of quality score. Check your keyword relevancy too.