What is hstrial and why are my changes going there instead of my website?

I try to edit my website.  The correct domain name is listed in the upper right.  I make the changes and say "publish" and it says it has published to "hstrial" instead.  If I use the dropdown box under my domain name and look at the files, they are all files from "hstrial."  What is hstrial and how do I get the changes published to my actual website?