Ошибка Unable to connect to any of the specified MySQL hosts

Код:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;
namespace Form1
{
    public partial class Login : Form
    {
        public Login()
        {
            InitializeComponent();
        }
        private void login(object sender, EventArgs e)
        {
            // Настройка подключения
            MySqlConnectionStringBuilder connectStr = new MySqlConnectionStringBuilder();
            connectStr.Server = "185.125.219.197";
            connectStr.Database = "ih366535_cg";
            connectStr.UserID = "ih366535_main";
            connectStr.Password = "admin";
            MySqlConnection mysql = new     MySqlConnection(connectStr.ConnectionString); // Создаём копию объекта
            string queryStr = "SELECT * FROM `keys` WHERE `key`='"+key.Text+"'"; // Строка запроса
            MySqlCommand myCommand = new MySqlCommand(queryStr, mysql); // Сам запрос
            mysql.Open(); // Подключаемся
            mysql.Close(); // Отключаемся
        }
        private void key_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter) { login(sender, e); }
        }
    }
}