Yep. Stop giving him the treats. It's been 2 weeks. He is expecting a treat, wants the treat and therefore is verbally conveying this.
Put him in his kennel. Walk away and ignore. After a couple of days he will realize he is not getting ANY treats no matter what he does.
Also, I suggest...
What kind of testing do you do? Do you supply the buyers of your puppies a complete health guarantee? Do you have a contract? Within that contract to you state specific tests done on the stud and b*tch?
Does it also state you will take a puppy back no matter what the circumstances?
I am...