[MYSQL] Connection refused

[xpaaulx 3]

THis error:

[04-May-2019 16:34:29 UTC] PHP Warning:  mysqli_connect(): (HY000/2002): Connection refused in /home/wepags/public_html/conexion.php on line 6

 

the line 6:

$conexion = mysqli_connect( $servidor, $usuario, $contrasena ) or die ("Error conection");

 

 

When i put this script on a free web hosting it works, but now i have a paid web hosting and the script is not working! hhelp pls