Hi!
So, I bought 3 collection items from the Cash Shop today, and I tried to open them, it showed the items inside, and when I clicked the link to go back to my inventory, I still had the collection item, and none of the items that were supposed to be taken out of the collection package. The collection packages are the December 2013, 2014, and 2015 packages. I tried to open all three of them and it was the same result; Items shown inside the collection packages, but items were not put into my inventory. I thought it might have been my browser, but I tried with both firefox and google chrome. Both browsers gave the same result.
Dunno whats going on, but I thought this might be a bug, and that I should report it.