Error 1044 - Access Denied al conectar MySQL

[Belico6161]

Estos son los datos de conexión que estoy usando en conexion.php:
Usuario: if0_38813390
Base de datos: if0_38813390_XXX
Host: sql213.infinityfree.com
Contraseña: (Correcta, verificada en el panel)

Pero al intentar conectar con PHP (PDO y mysqli), me aparece este error:
SQLSTATE[HY000] [1044] Access denied for user ‘if0_38813390’@‘192.168.%’ to database ‘if0_38813390_XXX’

Ya verifiqué en phpMyAdmin, y puedo ejecutar SHOW TABLES;, lo cual confirma que la base de datos existe y funciona.
Sin embargo, cuando intento insertar datos o conectar con conexion.php, aparece el error de acceso denegado.

TRANSLATED BY MOD

These are the connection details I’m using in conexion.php:
User: if0_38813390
Database: if0_38813390_XXX
Host: sql213.infinityfree.com
Password: (Correct, verified in the panel)

But when I try to connect with PHP (PDO and mysqli), I get this error:
SQLSTATE[HY000] [1044] Access denied for user ‘if0_38813390’@‘192.168.%’ to database ‘if0_38813390_XXX’

I already checked in phpMyAdmin, and I can run SHOW TABLES;, which confirms that the database exists and is working. However, when I try to insert data or connect with connection.php, I get an access denied error.

[Greenreader9]

@Belico6161

Access denied for user

@Admin

Access denied for user

You can see an error message which looks like Access denied for user 'epiz_12345678'@'192.168.0.*' (using password: YES). This message means that the user was able to connect, but does not have access to the provided database name.

This could mean one of two things.

This generally means that the database name is not correct. If you entered the database name my_database when creating the database, the full database name looks like epiz_12345678_my_database. The easiest way to make sure you have the right database name is to go to the MySQL Databases section in your control panel. If you haven’t created your database yet, you can also do it through this menu.

It could also mean that your database password is incorrect. The database password is the same as your hosting account password (which is different from your client area password!). You can find your hosting account password by logging in to your client area, click Manage next the account, scroll down to MySQL Details and click Show next to the Password field.

^^^