This is the version you need to have and you need to enable it in your firewall by ticking both checkboxes and then clicking apply at the bottom of the list.

https://mega.nz/folder/WphCTJ5K#Yn56BX6PHe5RME0IXgDdOQ/folder/q14WBbqI

As explained there's no password for any of these games to play, you just click join in the game while you're connected to the Radmin VPN and if I'm hosting you will see me in the list, you click that game in the list, it will say Rainbow6something or something like that (nick which you can set in codex.ini in game's folder). I can host around 11am CET to maybe12:30am Saturday and Sunday, but if I'm not there, you can post a comment here and if I get it then I will get back to you asap so we can arrange the play.

When I say click in the list, it's not clicking in the list for Radmin, no, it's inside the game, you go multiplayer > custom game > local > join and then click refresh to see if I'm in the list or anyone else, if it's empty it means nobody is hosting. To host you need to go multiplayer > custom game > create > (pick map fr om the list you made, if you made one) > join as a player (to both be a hoster and participate in the game as well as a player).

I hope this is clear, but if it's not I'm attaching also a file which explains wh ere you set and how you set a firewall, it's the screenshot above. You have to start game once so the firewall would make an entry in that list or you can add it manually with the button "allow another app..." which you can also see on the screenshot, but in that case you need to navigate to where you unpacked the downloaded game and click on the game's exe which is in my case: C:\games\Y1S0_Vanilla\RainbowSix.exe