keys activation using vpn???

It's ok i guess, BTW how are the things there?

There is a chance of ban, and that's how Steam get torrents

Steam Subscriber Agreement ("SSA"):
You agree that you will not use IP proxying or other methods to disguise the place of your residence, whether to circumvent geographical restrictions on game content, to purchase at pricing not applicable to your geography, or for any other purpose. If you do this, we may terminate your access to your Account.

https://support.steampowered.com/kb_article.php?ref=1266-QFZC-2141&l=english

A lot of people tried it in the past, and they got banned. If the US fucks you, it's time you fuck them: Start using torrents. It's not like if they were giving you another option...