IMO it appears he likes to keep you on the hook by asking redundant questions.

He always asks about practice/games but he never shows up. But then he'll text again and ask the same questions again.

Then he asks about spending time with the kids but never shows up.

You're in a tough spot because of the D. You can't keep from the kids but at the same time, you're stuck in your communications with him.

If I was you, I would share my concerns with your lawyer and ask how you can switch things up so WAH can communicate with kids but not with you.

I really think that would help you detach and would definitely make WAH think he might be losing you.