I do see on this page https://www.blogmutt.com/pages/customer there is a How It Works with the following:
- We write a blog post on the suggested topic using the ideal number of keywords.
- You post the content to your blog.
- Your site's SEO improves.
- Through your blog, you will engage new customers.
Could it be that they feel this is a guarantee that you can't back? I'm not saying anything against you or your company here, but just trying to see where Google might find an issue with things. One of the conditions in Advertiser Claims is "All advertising claims must be factually supportable." https://support.google.com/adwordspolicy/answer/1331529?hl=en&ref_topic=1310871