I have an external DataBase and the servers console says this when the plugin is loading:

http://pastebin.com/tZDLvxDE

My config.yml:

http://pastebin.com/HCiie8i2

I know that not is an a BUG or a issue, but i need help.

Are you sure that the database is accessible with those credentials?
Also, try to disable local as you don't need it.

Yes, is accesible from web

I tried to disable local, but the plugin disable itself:

[2016-01-07 23:34:14] : Enabling BanManager v5.8.0
[2016-01-07 23:34:15] : Local Database is not enabled, disabling plugin
[2016-01-07 23:34:15] : Disabling BanManager v5.8.0

The local database option in the config is always required. From your config it looks like you are attempting to connect to a database over the internet, ensure your database allows connections from your minecraft's server ip address.

If you're unsure of how to do this, check the FAQs over on the BukkitDev project page.