Facebook Graph IP filtering - facebook

Question

I've read few posts around about the limitations on 600 requests in 600 seconds that Facebook Graph Api sets on requests.
This question is about getting some clarification in the issue I'm facing.
I'm doing requests, quite simple to the FB Graph:
So, from my home I run:
curl https://graph.facebook.com/v2.0/?id=https://www.example.com/article/the-name-of-the-article/
(Having the trail slash is not trivial)
which gives me empty results:
{
"share": {
"comment_count": 0,
"share_count": 605
},
"og_object": {
"id": "XXXXX6ZZ70301002",
"description": "text",
"title": "title",
"type": "article",
"updated_time": "2019-03-09T00:15:06+0000"
},
"id": "https://www.example.com/article/the-name-of-the-article"
}
I took the url from js code in the website.
Instead, running the Scrapy crawler, on the same url, still from home network, gives me the same as above:
{
"share": {
"comment_count": 0,
"share_count": 605
},
"og_object": {
"id": "XXXXX6ZZ70301002",
"description": "text",
"title": "title",
"type": "article",
"updated_time": "2019-03-09T00:15:06+0000"
},
"id": "https://www.example.com/article/the-name-of-the-article"
}
Which is more than fine for now and the js-code-scraping system seems to be working. The results contain all the information from js calls to FB Graph.
Hands on server side, the crawler runs as expected, but having a closer look at the results, information coming from js code execution is not there.
I've checked the whole code, in other url which also fires js actions to provide html content and the code actually works fine.
Then, repeating the simple:
curl https://graph.facebook.com/v2.0/?id=https://www.example.com/article/the-name-of-the-article
this time from the server ip, it replies:
{
"error": {
"message": "(#4) Application request limit reached",
"type": "OAuthException",
"is_transient": true,
"code": 4,
"fbtrace_id": "ErXXXXZZrOn"
}
}
Regarding ip-blocks, the code wasn't able of delivering more than 600 requests. Actually it sent less than 10 requests to the graph api.
Obviously, the information coming from js requests to the Fb Graph Api from server side is missing.
I tried from different servers, from different providers, to check if there was a Ip filter on Cloud providers, but it seems that is not the case, as in every server the results are the same.
What is going on here?
Why the js requests do not get valid response data when they are fired from server ip addresses? (as it gives the error OAuthException:Application request limit reached also using the curl command)
Thanks for any clue