Failure to add items

Hey so I've been wanting so add a couple of music albums I've heard to Listal, but when I copy and paste the URL of the page showing off the music album to add the item (as I've always done), it doesn't take me to the "Add item page". I've been having these problems from over more than a week now, it was solved momentarily but it came back a few days ago. Can someone tell me what's up?

Umm, so I guess this only happens with Amazon links...