How to change parent's login name?

If you create accounts for parents: How to create accounts for teachers, students and parents and input some incorrect data, i.e. an incorrect email address, then it is necessary to correct the account together with the email address.

You can correct the email address of the parent via the wizard in the school data section:

Click on parents, here you enter the correct email address and click on save changes:

If you have already corrected the parent's email address in Agenda Online in the student's tab, then just press parents and press "Save changes" and the username will be overwritten to a new one.