Help Setting Up mySQL Database

So I run a minecraft server network called GulchNetwork. I am currently setting up a vote for coins system, with the coins, players are able to purchase in-game items/ranks throughout any of the gamemodes. Each gamemode has it’s own server, so obviously each server would need to get its information on how many coins each player has from a mySQL database. I’m a noob with this though, this is my first time setting one up. I have bought a droplet, I have set this in the config file of the plugin I’m using (NetworkCoins).

MySQL: Host: (the droplet ip) Port: 3306 DbName: network_coins Username: root Password: (root password, correct)

I have everything filled out correctly, put the plugin gets this error. 07.03 04:39:21 [Server] WARN at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) 07.03 04:39:21 [Server] WARN at me.josh.networkcoins.NetworkCoins.onEnable(NetworkCoins.java:72) 07.03 04:39:21 [Server] WARN at me.josh.networkcoins.NetworkCoins.openConnection(NetworkCoins.java:98) 07.03 04:39:21 [Server] WARN at java.sql.DriverManager.getConnection(Unknown Source) 07.03 04:39:21 [Server] WARN at java.sql.DriverManager.getConnection(Unknown Source) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.Util.handleNewInstance(Util.java:407) 07.03 04:39:21 [Server] WARN at java.lang.reflect.Constructor.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2371) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2334) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:343) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) 07.03 04:39:21 [Server] WARN at com.mysql.jdbc.Util.handleNewInstance(Util.java:407) 07.03 04:39:21 [Server] WARN at java.lang.reflect.Constructor.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 07.03 04:39:21 [Server] WARN at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 07.03 04:39:21 [Server] INFO The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. 07.03 04:39:21 [Server] WARN com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 07.03 04:39:19 [Server] INFO Successfully registered /coins as your custom command 07.03 04:39:19 [Server] INFO Enabling NetworkCoins v0.5

If anybody could please help me with this, it would be greatly appreciated, for this is high priority for my server network.