Sorry that you are disappointed, but this has nothing to do with Upwork. Upwork has no control over what your country does. Talk to your country and get them to make the necessary changes so that they are no longer on the restricted list. Then you may use Upwork.
Morteza R wrote:
I appreciate your swift response. Obviously I can not change my
government's policy!!! and US as well. Do you have any suggestion for me to
enable me to use upwork? For example, can I use the address of an
acquaintance in another allowed country for me?
No, that would get your profile deleted real quick.