Hi,I think the blank screen might be that you don't have everything in
place right now, I'd take a look at the QuickStart guide
https://helpx.adobe.com/content/help/en/digital-publishing-solution/help/getting-started-dps/_jcr_content/main-pars/down…
, that will take you through the workflow step by step.Also take a look
at this infographics:
http://www.tech4pub.com/2015/07/29/infographic-how-adobe-digital-publishing-solution-works/
Hope that helps.