Magento Free shipping and Coupon discount

Question

I have a free shipping price rule which is configured like this:

• All customer groups
• No coupon
• uses per customer: 0
• Conditions: Cart

Answer 1

As suggested in one of the comments it's best that you try and convert the current rule into a "Shopping Cart Price Rule".

In a Shopping Cart Price rule you can also set conditions that depend on the subtotal of the cart, the shipping region, shipping country, ...

In the action tab you can easily Free shipping option to "For shipment with matching items"

This should solve it ;)