First of all, download the VPN into their devices.
Go to the official website of VPN's, register for the given services.
Then , use same VPN services by connecting to a host in a different P2P-friendly region.
After, open the website of 1337x in your web browser or any of its proxy/mirror pages, and possibly VPN shall be accessed at same time.
Read more here:- https://assistsuite.com/1337x-proxy-mirror-sites-list/