Changing DOB on my scouting account

Have a parent MID 13909005 who created a my scouting account but now cannot register child as he accidently put childs DOB in record now will not recognize him as an adult DOB should have been 6/12/83 Is there a way he can fix?

Make a new myst account or call council - common issue

We cannot find account at council guess I will just have him make a new account