Postnuptial Agreement — ex-spouse relocating with children

Looking for advice on a legal issue. Here's what happened.

ex-spouse relocating with children. I've been dealing with this for about 4 weeks now and the situation isn't improving.

I have already tried to resolve this directly but did not get a clear answer.

What are my legal options here? Is it worth pursuing?

Following this thread — I'm in a very similar situation. Would love to hear how it turns out.