Welcome back to the Wefugees Community and thank you for reaching out to us again.
In case you live in or around Berlin, I can recommend you to contact the “Zentrum für sexuelle Gesundheit und Familienplanung“ in Berlin-Charlottenburg. Please follow the link for brochures in many different languages. They are quite experienced in this field and can provide contact details of potential notary services.
Nevertheless, I hope that you also read the information and advice my dear colleague Alla gave you on your earlier question?
All the best,