Your image is like such, because your krpanotools license wasn't present when you used the droplet.
It's NOT needed online.
Your expiration watermark is visible because you do not <prerelease watermark="false" /> in the xml as per the documentation.
Or if you are not comfortable editing xml, you can edit the javascript in the html.
viewer.addVariable("prerelease.watermark", false);
viewer.addVariable("xml", null);
viewer.addVariable("onstart", "loadpano(tour.xml))");