my store address are- United States, zip code 91423, California zone .

customers shipping address for example Israel, Italy (I mean customers, without possibility to buy through UPS shipping method). I'm added a screenshot in my 1st post , that I recieved from angry potential customer :)

Zen-Cart 1.3.7 version for my site is ready and I'm just want to upload it, but I have the same problem on localhost
I'm locally added a customer in clear 1.3.7 with shipping address like you can see in a screenshot from 1st post. And can't to choose UPS method again

...so I want at first to solve the problem local, and after that replace Zen-Cart 1.2.7