You're probably still running version 3.0.13.8 make sure you stop the server, delete all the files and make a fresh installation with the link above!on linux version they have changed !!! I downloaded the version and started still showting me 3.0.13.8 ! LINUX
adduser teamspeak
cd /home/teamspeak
curl -O http://dl.4players.de/ts/releases/3.0.13.6/teamspeak3-server_linux_amd64-3.0.13.6.tar.bz2
tar -xf teamspeak3-server_linux_amd64-3.0.13.6.tar.bz2
cd teamspeak3-server_linux_amd64
./ts3server_startscript.sh start