Unable to change Screen Time password on my child's iPhone

Hi guys.

My kid has learned the code for screen time. Doh!

So I went to family settings on my phone and my kids name then changed the screen time password. Great so far.

But it didn’t work. It’s still the same code on my kids phone. It doesn’t change and because I am the account family owner only I can change it on my phone. There Isn’t a change code in my kids phone.

any help is appreciated. Thx

[Re-Titled by Moderator]

Original Title: Screen time password not changing on child’s phone.