Steam says I am not authorized to connect to servers

https://forums.tripwireinteractive.com/forum/rising-storm-2-vietnam/rs2-vietnam-general/the-bug-report-ab/2304433-steam-says-i-am-not-authorized-to-connect-to-servers

Hi, I am consistently having a problem whenever I try to connect to any server. After about a minute of being in the game all the other players...