Cannot delete item

[Pengwynlob]

Hiya Garen,
I hope you'll be able and willing to help me....
I have an extensive cd and dvd collection that in the last months i have been cataloging using shelves. Recently, my phone was serviced and reset to factory settings. My database was lost.
Luckily I had a backup from a few months ago, so I didn't need to do evetything anew... but after restoring the old database, I found there is one entry that now shows up 5 times which I cannot delete or even access, because that crashes shelves. I did purchase the unlocker. But am at a loss to how to fix this. I have no use able programming skills.
I use the full version on a Samsung note 2 running android 4.3