Before I upgraded to Warehouse lvl 3, I didn't have much warehouse space. When I managed to free up some room in my warehouse, I tried to battle a Puma Guardian and it didn't say that I didn't have enough space for the items I would recive, but when I won, I got one item, but their was a second item that didn't go to my warehouse because their was no room. I tried refreshing the page after I added the first item to my library but it didn't work. AND the second item was a Stable lvl 5!!!! I am so sad that I wasn't able to recive it!!

A general rule is to clear at least 2 items. Otherwise you might end up like this, not being able to recieve the second item. Refreshing doesn't work. 

I wish I had known that before :(  It was a good item.