I ran into the same issue, when trying to render through cloud publishing using VW cloud services option, none of the lights rendered. While troubleshooting I tried cloud publishing a single sheet layer through Dropbox Integration, and it worked! Only in a couple of minutes I had my PDF with lights rendered. Then I tried for a second time, and the status circle appeared to be complete but the syncing to dropbox took more than 8 hours. Im currently trying it again and same issue happens, the cloud services app shoes the complete circle on the status column and the on the bottom left corner it shows the syncing is in process.