Ok well after letting it go on several websites known for butchering the English language, it seems that the results have been capped at 5 for the free version.
You're right, that totally wasn't clear from the text we had on there. Thanks for pointing that out. I've updated the copy so it makes more sense now. The quick scan on the homepage only lists the first 5 errors. You need to create an account to see the full list of errors.