You have 3 different kinds of free products applied. Either use:
1) Every nth item (but this currently doesn’t do anything with your coupon because the coupon amount is 0%)
2) BOGO, 1 free item will be added for every matching product in the cart
3) Free products + Allow multiplication. This will add n free products multiplied by the amount of times the coupon can apply.
I think in your case you should either choose option 1 or 3. Disable the BOGO.