Board Thread:Questions and Answers/@comment-76.170.210.95-20141027081849/@comment-35118800-20141027113732

Complete Chapter 2, then you'll have the ability to upgrade past level 10. But there's another way and apparently, it worked. On the daily ticket thing, if you get a cat upgrade, don't use it. Wait until you already maxed out the cat you got the ticket for (so level 10) then after that, use it, and you'll for some reason you'll be at level 11 and can upgrade to level 20.