As explained in the email you have received, you need to register your child again for catechism due to changes in data protection law and policies.
Please find the relevant form over here:
Only those who have registered already, may use these forms (we cannot accept more registrations for Saturday catechism).
Please remember that both parents need to sign the forms in my presence (you cannot sign them at home; you cannot use an electronic signature; you cannot send the form by post).
You may read the General Terms and Conditions for Personal Data Protection in Parishes here.