Kids syncup won't turn on

We’ve gone through 3 of these watches in the past year and a half. at first I thought my daughter had broken hers because she’s a bit of a brute, so we got that replaced, ended up paying 200 bucks to get a new watch hooked up. But then my son just stopped working and he’s very careful with his things. Of course they’re out of warranty so now I’m stuck with a plan for a watch that doesn’t work.  Def not impressed with how durable these are when designed for children 😢