Give- Salesforces don't send custom form fields

[JosePFs]

Hi,

We had installed all the plugins to integrate with salesforce and basic data are sent to sf but not custom data. We have included this code snipped in functions.php theme file (or in a custom plugin) but this filter is never called. We use Paypal, Stripe, Bizum, and even using for testing purpuses a testing gateway, but does't work, that addGiveSalesforceDonationArgs is never called. Person in charge says that problem started with a licence renew. License is "Pro Plan (Legacy)".

function addGiveSalesforceDonationArgs($args, \GiveSalesforce\Salesforce\DataTransferObjects\SalesforceOpportunityData $data) {
    $codigoPostal = give_get_meta($data->donationId, 'codigo_postal', true);
    $direccion = give_get_meta($data->donationId, 'direccion_1', true);
    $fechaNacimiento = give_get_meta($data->donationId, 'fecha_de_nacimiento_2', true);
    $telefono = give_get_meta($data->donationId, 'telefono', true);

    $args['Codigo_Postal__c'] = $codigoPostal;
    $args['Domicilio__c'] = $direccion;
    $args['Fecha_de_nacimiento__c'] = $fechaNacimiento;
    $args['Telefono__c'] = $telefono;

    return $args;
}

add_filter('give_salesforce_donation_args', 'addGiveSalesforceDonationArgs', 10, 2);

Thanks in advance