I have a strange problem with shipping.
We charge fixed table rate for domestic shipping up to 50$. anything above it being given a free shipping via UPS or in addition customer is given 3 choices: ground, 2nd day, 3rd day shipping) and UPS set to residential rates.
Every once in a while (about once a week) i see customer, that spends over 50$ suddenly is being charged for ground shipping simply because he doesn't see the free shipping option. took me a while to figure out that the problem is customer's given shipping address. Customer don`t see the free shipping option, when he puts PO BOX address, or non residential address. The question is... how to make the store not to charge for shipping if customer spends over 50$ disregard of commercial address that they provide?
1.3.9h version is used.
thanks.