Hi Petra. I'm Greg, an installation specialist, 10 year Windows MVP, and Volunteer Moderator here to help you.

One sure way to get out from under Family Safety restrictions is to change the MS Account to a Local Account in Settings > Accounts > Your Info > Sign in with a Local Account instead.

Later you can add a new MS Account, or wait until your old one is fixed, but this time add them in Settings > Accounts > Family & Other People under Other and not Family.

What works best for Family Safety problems we see here every day is to remove the child from Family Safety, restart PC, then add him/her back. Tutorial here:
http://www.tenforums.com/tutorials/34763-child-.... Make sure this is what you did to remove yourself from Family.

Family Safety FAQ:
https://answers.microsoft.com/en-us/windows/for...

There is a thread here on Troubleshooting Family Safety which is attended by a Family rep who gives his Twitter and responds to Comments for personalized help:
https://answers.microsoft.com/en-us/windows/for...

I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I solved your problem, I will keep working with you until it's resolved.

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Petra -

Then these must not be Microsoft Family restrictions because they can only be applied through the MS Accounts. Did you restart the PC?

Is this happening in Chrome, by chance? It also has buggy age restrictions.

Im getting the microsoft family notifications asking to a message to an adult meaning microsoft families has a part in this error. Im stumped

i used did use chrome to remove myself from the family im not sure if thats what you ment. 
thanks,

Petra

See the last post here for how to remove Family Safety completely:
https://www.bleepingcomputer.com/forums/t/64647...