Beware buying the new chests of the snow queen!

I bought one of the new chests initially to get the glacial swords, however now I have built the snow castle I just got invited to my first battle. The keys required to open the battle are showing in my inventory but the game still wanted me to pay 30 diamonds for more to enter the battle! (They are 1 diamond each and you need 30 to enter). It's like the ones in my inventory don't exist!

The friend who invited me has the same problem!! Just wanted to warn people not to spend diamonds buying these chests because the keys don't work! We are going to open tickets with GI and I'll keep you updated as to how we get on...

The same thing happened to me. I logged a ticket and they fixed it.

I logged a ticket last night but haven't had a response yet, however 50 of the "correct" keys appeared in my inventory this morning as if by magic!

The chests have now disappeared from the shop! Lots of friends experienced the same issue so I guess GI was bombarded with tickets!

I have a similar problem. I received 30 icy roses, the same picture that I need to battle the ice queen. They were received as a reward for an achievement. When I try to enter the castle, I am told that I need to buy the 30 keys.
I dread contacting GI. I have never had a positive outcome with them.
Never ending correspondence, with nonsense responses. Once I finally responded -"I give up", and they said that they are happy that the problem was solved!