Update..
Wx-h had been very quiet with everyone.. no contact.
Last week, a deposit was made in MY PERSONNAL account.

2 days ago, he contacted D17 in regards of her winter tires. Yesterday, she went over and for some reason, he could not install them. This was the first time he saw her car. He really liked it and it made D17 happy!

Today, he called my cell and explained to me why he could not change her tires and gave me a list of things to mention to my mechanic when i bring her car in. He asked if i had received money. I said yes and thanked him. Short and civilised call.

Later today, i have received another deposit from him. Both deposit were more than his child support..

I see more and more contact. Short contact but frequent. He' s been silent with me for long period of time. Now, he contacts at least once per couple of weeks. I' m not sure why.. time will tell.