SonicWall NetExtender setting, Server, shows multiple identical menu entries but only one works
My office is using SonicWall NetExtender since last year, and Server setting has become a problem.
"Server: specify the Ip Address of the SonicWall WAN (by default SSL VPN is enabled on every WAN Interface of the SonicWall) followed by the port (specified in Server Settings of SSL VPN)" 
The below screen shot is a sufficient example from MySonicWall documentation showing dropdown options under Server. The problem is my Server drop-down displays 7 examples, 2 are identical, but only 1 works. My colleague's settings show 5 identical entries where only 1 works.
Can I troubleshoot NetExtender client on my machine? Or, must this be resolved by the system admin?
Can I discover the difference between identical Server entries in NetExtender client?