Does TeamsPlus require Vault?
Only if you want economy support (team bank). If you do not use bank features, Vault is optional.
How do I enable MySQL?
Set storage mode to MySQL in config.yml and provide host, port, database, user, and password. Restart the server to validate connectivity.
Players can’t use /team
Grant teamsplus.use to your default group.
Placeholders show blank
Install PlaceholderAPI and restart. Confirm your scoreboard or GUI supports PlaceholderAPI formatting.