So I bought 6 locks at the same time, which arrived quickly. I followed the instructions to change the combination (not difficult, easy to read and understand, which I really appreciate, especially these days!) All but one easily changed combinations. (Even though I did the exact same process for each.) I emailed to ask if there was a way to reset the one, and they immediately sent out another two locks, which both worked just fine, with no questions asked! All locks still work fine to this day!
I must stay, I was a little reluctant on buying this product because of the lack of reviews, but I am not disappointed at all. This product is EXCELLENT. I was a little overwhelmed with the installation process at first, but after emailing back and forth with the seller they were able to send me step by step video instructions. It was super easy to install and looks great. The individual keys are very well made. Highly recommend it