AbleCommerce Shopping Cart Software

Hi, all We have free shipping over $100 for most of the products except gift certificate. We set up the custom warehouse for GC and set it has non-shippable item. Also, apply the free shipping method only to the regular warehouse which doesn't have GC in it. But somehow, GC is still being calculated...

I have tried to install this change, but the customer is still getting Bot Activity Detected.
The customer was using guest checkout, after she clicked Visa as her payment method she received the dreaded Bot Activity Detected message.
Any idea?