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Hi James, Per Moz's Documentation on On-Page-Reports: The On-page summary automatically generates reports for any of your campaign keywords that rank in the top 50 of your primary search engine. The URL that it grades is the same URL that appears in the search results. For instance, if you have 75 keywords ranking in the Top 50, you should have 75 On-Page Reports. This generation happens automatically within 24 hours of when your rankings are updated.

If you just added the site in seomoz campaign - it can take some time until other pages are crawled. And since it looks like there are no issues with your structure based on a site: search it should solve by it self in just a few days. If this issue is older then a few days then indeed something is wrong. It will be a good thing to check and see if you are not blocking any bots though. (either by default or as a setting for bots trying to crawl your site in order to save resources). I've seen it happened. If all things "fail" then you should take Andrea's advice and contact customer support but out of curtesy you should review the situation before sending the ticket