Simply open the xml that was created.
Read the documentation that I linked to and edit the file for your exact and unique specifications.
http://krpano.com/docu/xml/#image
<image type="CYLINDER"
hfov="360"
vfov="115.04"
>
Expecting a droplet to be able to take a random file and know exactly what to do with it, is not realistic.
Your image does not contain some special embedding exif that describes its geometry.
You have to provide that.
Things get a lot less frustrating if you read the documentation and understand the examples that were provided. Once you past this step, then it becomes much easier to achieve the results you want, rather than try to hack n slash all the way to the solution immediately.