Owned Chinese Mythology world wants me to pay for it again after latest 1.1.1 update

Before the latest upgrade 1.1.1 I had bought two worlds - Festive Mash-up 2016 and Chinese Mythology Mash-up. Now only Festive Mash-up opens. Chinese Mythology now wants me to pay again with gold coins. I think this should be a bug in the new version as I have already paid for it. Let me know what I should do to remedy this.