I had same problem, saying 8 clips importing but never actually doing it. These were clips from 2 days ago. I cannot simply reinstall app because I can't lose them - I don't remember the exact content links and work-related (I rely on clipping so I don't need to remember!). Just leaving the app open on my iphone didn't work (don't have ipad), tried doing this many times over a couple of days, but the iphone app would just close (& sometimes seem to freeze/crash).
Anyhow, this seemed to work for me: I closed down every single app by double-clicking Home button, then shutdown my iphone, restarted it & just opened EN app, left it open, and when came back from shops it had successfully imported everything.