HOW TO USE PLUGIN?
There is nothing you should do.
On first installing. The plugin will add all players to database (After this process, The plugin will automatically set First-Setup to false in config.yml but you had better check it)
And you can also set op players can break spawners or not in config.yml
When a player tries to break someone else's spawner. Plugin will block.
Note: Only new placed spawners,after the plugin installed, will be protected
You can enable Transfer Spawners in config.yml
Commands:
/spsetowner
/spsetowneradmin
/spinfo : With this command, you can learn whose this spawner is (By default admin command, permission is SpawnerLock.spinfo)
/spuser : With this command, you can see all players who placed a spawner, how much spawner these players placed and where these spawners are in gui (Admin command, permission is SpawnerLock.spuser)
Note: you have to look at a spawner while executing these commands (Except for /spuser)

Prevent players from broking others' spawners and view placed spawners