I looked up through the fairies chapter, in chapter 5 you can skip the first one
Chapter 6 if you skip one, you're going to miss out on an expansion
Chapter 7 you can skip 20 and 22
Are you guys absolutely sure this isn't a bug that you can skip squad sizes? Seems like a bit of a loophole to bypass spending kps and to get cheaper tournaments. Whatever the case, unless this was an announcement you can do this, I'm not going to skip them.
I've seen bugs like this before, and a whole lot of people get banned because one person says it's okay to do it.