I took me several clicks to see whether you even have a free tier, and then I wasn't able to try it out without giving you an email address, I closed the tab. Please, if you have a free tier anyway, provide some way to play around with a demo without jumping through hoops. Limit it by time or by story elements or characters or whatever, but just provide something to get me interested and see how it actually behaves.

Personally I'm on the fringe of your potential customer base: No kids myself, but plenty of kids in the family that I read to from time to time, and whose parents I could recommend this to, if I saw that I liked it. Make of this what you will.