Tbh OP there seem to be a few “weird” things going on from your post.
The behaviour you mention.
The fact you and your DH seem to have made very little effort to integrate your families and all get to know each other before the wedding. How did you know it was going to work? You didn’t.
The fact your DH spends all his time in the bedroom messing about on his phone - just like the average teenage boy in fact.
The fact that your husband seems to make very little effort with them and you do all the running ( credit to you for that).
The fact you got married in July and you’re already in counselling.
Let’s be honest, it’s not great is it?
The boys probably - understandably- - feel uncomfortable in your home, and your husband’s not exactly putting out the welcome mat, is he? Your kids get shipped off too when they arrive.
Either that, or they feel unsafe for some reason.
You and your husband seem to have rushed this and handled it badly. You BOTH need to focus now on building bridges before it’s too late -as someone else said, soon they’ll be able to choose whether to come or not.
I feel very sorry for them. Good luck.