My App component can't connect to MySQL DB Cluster, but the same app connects from local.

Hi,

I am not a very technical person, just created this API and a frontEnd to learn a bit more on the topic and I may be missing something very basic, sorry in advance if that’s the case.

I have a PHP API that works great in local (it connects to my MySQL cluster in DigitalOcean from Local, tested in Postman and in MySQL WorkBench) but when I deploy it throws an error on DO server:

SQLSTATE[HY000] [2002] Connection timed out

SAME connection string.

I’m figure out a permissions error happens, but I added my App Component to the Trusted Sources, as my local IP and I am not sure if I should add something else. I downloaded the CA Certificate and added it to the same path as the connection php file:

class Connection {
  _//-----> DB Info_
  _static_ _public_ function infoDatabase() {
    $infoDB **=** array(
      "host" **=>** $_ENV['DB_HOST'],
      "database" **=>** $_ENV['DB_NAME'],
      "user" **=>** $_ENV['DB_USER'],
      "pass" **=>** $_ENV['DB_PASS']
    );

    **return** $infoDB;
  }

  _//-----> DB Connect_
  _static_ _public_ function connect() {
    **try** {

      $options **=** array();
      **if** ($_ENV['APP_ENV'] **!=** 'local') {
        $options **=** array(
          _PDO_**::**MYSQL_ATTR_SSL_VERIFY_SERVER_CERT **=>** true,
          _PDO_**::**MYSQL_ATTR_SSL_CA **=>** "./ca-certificate.crt"
        );
      }
      $link **=** **new** _PDO_(
          sprintf(
              'mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4',
              Connection**::**infoDatabase()["host"],
              25060,
              Connection**::**infoDatabase()["database"]
          ),
          Connection**::**infoDatabase()["user"],
          Connection**::**infoDatabase()["pass"],
          $options
      );

      $link**->**exec("set names utf8");

    }**catch**(PDOException $e) {
      $response **=** array(
        "error" **=>** $e**->**getMessage(),
        "environment" **=>** $_ENV['APP_ENV'],
         "host" **=>** $_ENV['DB_HOST'],
      "database" **=>** $_ENV['DB_NAME'],
      "user" **=>** $_ENV['DB_USER'],
      "pass" **=>** $_ENV['DB_PASS'],
        "isNonLocalEnvironment" **=>** $_ENV['APP_ENV'] **!=** 'local'
      );
      echo json_encode($response);
      **die**();
    }

    **return** $link;
  }

Those Env Variables have the correct values (The same than in the Env Variables section of my App), and here is what $response returns:

{
	"error": "SQLSTATE[HY000] [2002] Connection timed out",
	"environment": "dev",
	"host": "private-db-beapilot-sp-ppl-do-user-14307371-0.b.db.ondigitalocean.com",
	"database": "beapilot",
	"user": "thecorrectuser",
	"pass": "thecorrectpass",
	"isNonLocalEnvironment": true
}

I am not sure what else to check or fix. =(

Thanks in advance for your help!

Daniel