BetterTeams conflicts with NVus Tags in the way it uses the vanilla teams for it's own purposes. Added a check if BetterTeams is installed on the server it will provide warning messages on how to get NVus Tags working properly with BetterTeams. You will lose the tag functionality of BetterTeams but everything else from the plugin will function properly.
Code (Text):
[WARN]: [NVusTags] It seems you have Better Teams installed on the server.
[WARN]: [NVusTags] In order for NVus Tags to work, you will need to go inside the Better Teams config.yml and set useTeams to FALSE!