Under freeoptions I give free shipping for orders over $100 coming from shipping zone Lower 48. Otherwise that zone' shipping is flat rate $4.99
The problem is when a buyer starts the checkout with less than $100, $4.99 shipping is automatically selected, and then the buyer continues shopping and adds to the cart pushing the total past $100. When checking out after that, although free shipping is now available, the flat rate shipping remains selected and the buyer must manually select the free shipping option.
How can I get the checkout to recognize that the new cart total should now trigger free shipping?




