Dear Madam.

Your daugheter is also the daughter of your exhusband. Whatever he does, he is unable to change this reality. The only exception is to sue both you and your daughter claiming not to be the father of his daughter. It is not only a long procedure but also needs to take samples of both your and your daughters blood during the lawsuits. Please ignore this possibility if he is her father (you are the only one knows the real)

Secondly if you change your adress without informing authoroties it is your problem. If your exhusband dies his wealth will be devided to his relatives including your daughter.

Yours faithfully