When you get your Primal Carnage Beta key, you will have to activate it on Steam. To do so, open up steam and use the 'Games' tab, then choose 'Activate a Product on Steam' like so:
There has been a rare issue where the server browser keeps saying that the join failed. If this happens, simply restart the game and it should be fixed.
If you have issues finding any servers at all, and your searches keep timing out after a number of refreshes, then follow the instructions on this page: http://bbs.codebrush.net/viewtopic.php? ... 1&p=32#p32
If you want to host games yourself, you will need to forward ports. To do so, please follow the instructions on the steam page here: https://support.steampowered.com/kb_art ... -GLVN-8711