@devil495
Great to hear you are back online.
About the username, one thing I found was that my SEO plugin (Yoast Wordpress SEO) was creating a sitemap listing from my blog posts listed under my user/author name, so I also had to change my username. After selecting Disable author/user sitemap in XML Sitemap-User Sitemap my new username has stayed secure. Maybe something like this could be the culprit in your case?
