Change online ID on PS4 with child lock?

I created 2 accounts on my PS4 a long time ago. My main acc has a child lock, was a mistake. I only play on my main account and want to change my online ID. Well it doesn't work.

There must be a solution, right? Playstation must have a solution for that! Can you remove parental controls?

Unfortunately I can't give an exact answer, but call support. That's what they're there for.