Age restrictions did not end when I turned 17. How do I fix this?

When I got my phone my parents set age restrictions on my apps. Once I turned 17 though, they didn’t go away, I looked up how to get rid of them and it’s set to 17+ but it still doesn’t let me get apps. I’ve restarted my phone a bunch and it’s just not working help!

[Re-Titled by Moderator]