Help me! My blog is missing!!
Standard ownership analysis of the blog reveals that it is online, and it is owned by the blog owner, under the expected profile. Yet, the blog owner swears that it's not accessible, from the dashboard.
Sometimes, this discrepancy is caused by incorrect transfer of a blog, from one Blogger account to another - or possibly by a basic misunderstanding of the relationships between Blogger accounts, email addresses, and Google accounts. Always bear in mind that "email accounts" can include both GMail and non GMail email addresses - and there are significant differences between the two, when used in setting up a Blogger account.
In other cases, the blog may be offline - but Blogger will expect you to request review of the blog, from a dashboard link, to get the blog returned to online status. Alternately, the account - and blog(s) - may be locked because of detected "suspicious" account activity.
Some time ago, after numerous requests from blog owners with large dashboard lists (I'm a charter member of that club), Blogger gave us a way to organise our dashboard list (currently, this is an option only in the Classic Blogger GUI), and only list the blogs that we access the most often. If we have a blog that we access rarely, we can find it in the dashboard, and select the "Hide" link. That removes it from the list, when normally viewed.
If we need to access a rarely needed blog, we go the bottom of the dashboard list. At the bottom of the dashboard (above "Reading List"), we'll see the "Show all" / "View all blogs" link. Clicking on the link, we'll see all blogs, including those that we had deleted, those that we had hidden (using the "Hide" link), and blogs deleted or locked by Blogger for suspected spam hosting.
With all blogs listed, "Show all" will be replaced by "Minimize list". If we want to return a given blog to being always displayed, clicking on the blog link for "Always show" will do that. When we have found the missing blog, clicking on "Minimize list" returns the list to hiding all deleted, hidden, and spam locked blogs.
If you're missing a blog, and the missing blog is not caused by confusion over the Blogger account, look for - and click on - "Show all" or "View all blogs". Your mysteriously missing blog should appear.