In v10 the old shopping cart step 2 has now become step 1. The total for shipping and payment options in this step was in right place in v9, but now sub total appears after shipping option and before payment option. No problem if you have no costs involved with payment options, but when payment options include surcharges the logic is wrong in v10 to put the sub total BEFORE payment options. This is because when you choose payment option with surcharge involved then the sub total should come after, as it was in v9. Can you please move the sub total field back to where is was? Yes the subtotal does update when you choose payment with surcharge, but logic is wrong as you don't look back to previous total to see it actually changes.