You need prime status, if you don't have it use bypass, and also be sure server is up at first place, juts ping IP via cmd.
Also if it comes to servers I'm under development of server list on forum under this link:
Admin edit: there is new Server Browser on forum: https://hackvshack.net/servers/ IF THEY DOESN'T WORK, DON'T BLAME ME, THEY PROBABLY SHUTDOWN THE SERVER 178.32.80.148:27015 - MrX 2018 HvH MM (France) 178.32.80.148:27030 - MrX 2018 HvH MM #2 (France) 178.32.80.148:27031 - MrX 2018 HvH MM #3...