It’s always something with this game.
Purchased the 8th slot today as you can see here http://i.imgur.com/QXGhZ.jpg
But it’s not showing up. The other two worked like a charm. This time it just ate my gems and left me hang’n
I’ve logged out/shut down the game several times.
Very sorry about this inconvenience, guys. It took me about two minutes to log into the forum, through four tries, so I think that things are just busy. I have been told that sometimes it helps to log completely out of the game and then log back in. Also, I’ve read of instances where the purchase item shows up later. (In one case it was hours later, but that is not the norm!)
If you find that you’re still missing your purchase items after, say, one hour, could you please contact Support by filing a ticket through the “Ask a Question” tab on that linked page. They will be able to assist you at that time.
Ok, the team is in full swing to address this. Thanks again for your reports and for your patience. We should have this fixed in… as long as it takes the team (which is usually not long at all). 
