Scrapebox says X number were successful when posting, but the links aren't there
If you have ever commented on a blog manually then you might remember that sometimes you will get a notification from the blog saying that the comment was received. However many times you get no notification from the blog. When scrapebox receives that notification from the blog that the comment was received it reports it as successful. When it receives no notification it assumes that it failed. This does not mean that it did in fact fail, but scrapebox can not determine if it was successful or not. Many of the blogs that show failed in scrapebox, actually received your comment.
The blog commenter is just that, a commenter. It places the comments. Most comments will then go to moderation and be approved or denied. Some comments will be placed on auto approve blogs. Which is where the comment is automatically approved. So the successful post, just means the comment was submitted. It does not mean that the link is live on the site, that will be up to the admin to approve it or deny it. Unless it is auto approve, in which case it goes live immediately. If you check links right after you comment, those are going to be the ones that are auto approve.