Cannot connect to MySQL database from OVH server

I cannot connect to my database which is hosted on OVH remotely from Flutter's package mysql1 and get the following error:

flutter: SocketException: Failed host lookup: 'saintlouqpweb.mysql.db' (OS Error: nodename nor servname provided, or not known, errno = 8)

I usually access it through phpMyAdmin where I have three fields to fill: the server, the user, and the password. I use exactly the same values than there with mysql1 on Flutter in addition to the database name (the server field of phpMyAdmin being the host field of mysql1).

I have searched for hours a solution but I still find nothing on this forum and on the web. Everything is always brought back to a 'localhost' server or a problem too different from mine.

Here is the piece of code causing the error :

Future> getData() async
{
try {
final conn = await MySqlConnection.connect(ConnectionSettings(
host: 'saintlouqpweb.mysql.db', // the exact server name entered on phpMyAdmin
user: 'myusername',
password: '*********',
db: 'mydatabasename',
));

var results = await conn.query(
'SELECT * FROM `mytable` WHERE ID=1;'
);

return results.toList();
} catch (e) {
print('$e');
}
}
I would be grateful if someone can help me about that or experienced the same issue previously.