As someone who joined news blur after the reader shutdown, I hate to say it, but this seemed inevitable. The design was incredibly confusing (not to mention hideous) and there were so many options nested in so many menus that any time I needed to change something I could never find the option. I switched to feedbin since it had some semblance of design, was easy to understand and synced with many more apps.
Also, I was credited three free years for being an early adopter and I suspect many others were as well, so I really doubt a big revenue bump anytime soon.