you have two installations of the teamspeak server, one is in the /home/teamspeak folder and the other is in /home/teamspeak/teamspeak3-server_linux_amd64
First find which is the correct installation. You can do it by watching at the files date (ls -lah) or by looking at the logs into the logs/ directory
Once you found which is the correct one, just delete the wrong one and proceed updating the server as here:
