LinkedIn API: post won't take the image from the metadata (og:image) of the article's link - metadata

Question

I want to post on our Organization's page within Linkedin, using their API.
I want every post to take the reader to the article posted in our website.
The page itself has this meta information:
<meta property="og:title" content="⛔️ Un perro peligroso mata a otro en un barrio cerrado. Responde el Consorcio también? O sólo el dueño del perro? Liga del Consorcista" />
<meta property="og:description" content="El propietario del perrito fallecido acciona contra el dueño del perro atacante y el Consorcio. Hay responsabilidad?" />
<meta property="og:site_name" content="Liga del Consorcista" />
<meta name="image" property="og:image" content="https://ligadelconsorcista.org/archivos/id.5859--animalespeligrososjpg--fecha-12-08-2022-06-18.jpg" />
<meta property="og:image:secure_url" content="https://ligadelconsorcista.org/archivos/id.5859--animalespeligrososjpg--fecha-12-08-2022-06-18.jpg" />
<meta property="og:image:width" content="400" />
<meta property="og:image:height" content="300" />
<meta property="og:image:alt" content="" />
So I expect that the post will show the article's image, using og:image.
Here's how I do it in a demo page:
<?php
$url = 'https://api.linkedin.com/rest/posts';
$headers = array( 'Content-Type: application/json',
'Linkedin-Version: 202208',
'X-Restli-Protocol-Version: 2.0.0',
'x-li-format: json',
'Authorization: Bearer '.ACCESS_TOKEN_LINKEDIN
);
$fields = '
{
"author": "urn:li:organization:34649146",
"commentary": "Un perro peligroso mata a otro en un barrio cerrado. Responde el Consorcio también? O sólo el dueño del perro? Texto completo: https://ligadelconsorcista.org/jurisprudencia-perro-peligroso-mata-a-otro-responsabilidad-concurrente-del-propietario-y-del-consorcio",
"visibility": "PUBLIC",
"distribution": {
"feedDistribution": "MAIN_FEED"
},
"content": {
"article": {
"source": "https://ligadelconsorcista.org/jurisprudencia-perro-peligroso-mata-a-otro-responsabilidad-concurrente-del-propietario-y-del-consorcio",
"title": "Perros peligrosos: Responde el Consorcio?",
"description": "Un perro peligroso mata a otro en un barrio cerrado. Responde el Consorcio también? O sólo el dueño del perro?"
}
},
"lifecycleState": "PUBLISHED",
"isReshareDisabledByAuthor": false
}
';
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POSTFIELDS, $fields);
$response = curl_exec($curl);
PROBLEM: I can post the article, but it won't show the image.
As a reference, here are the permissions of my token:
r_1st_connections_size, r_ads, r_ads_reporting, r_basicprofile,
r_emailaddress, r_liteprofile, r_organization_admin,
r_organization_social, rw_ads, rw_organization_admin, w_member_social,
w_organization_social
And here's how it is posted: