I have choosen US as I was looking for US companies, but on Create Profile page I am asked for my addres and phone confirmation which confused me and not allowing me to change my country. Please help me. I am from UK. Thanks.
I'm sure if you raise a ticket with Upwork, they will help you straighten things out.
I'm based in the UK, and most of my clients are in the States, so don't worry about being based in the UK. That's the whole point of freelancing, the world is your clientbase. But you need to be honest and say you are based in the UK. Hopefully, Upwork will help you out with this. As it stands, your profile looks bad as you say you are based in the UK and willing to move to the States but your location says States.