Seems useful. However, I tried on several arXiv papers, and on all of them when clicking on references I get a "Sorry! We couldn't find the references for this

Seems useful. However, I tried on several arXiv papers, and on all of them when clicking on references I get a "Sorry! We couldn't find the references for this paper. This paper might have been posted recently. Try again later." (on chrome 59.0.3071.115)