I use Zen Cart 1.3.7
I want one item is free shipping and changed it for "Always free shipping " option.
But after changed I found all our products have to accept "free shipping ", otherwise don't let you check out. the shipping module is ERROR.
I have cancel the free shipping option that the item I change before.
But the thing is the same: all our products have to accept "free shipping ", otherwise don't let you check out.

Please someone tell me how to change back to the normall shipping option?