I have provided the above mentioned meta tags for my page which will be filled out by PHP based on the GET-ID in the request.
The problem is that when checking what the Facebook Crawler sees when it goes through my page, it gets empty data. All meta tags are empty, there is no title, the page is only loaded with the HTML template, but no actual content. It works with security if a regular web browser accesses it, most browsers even.
So, what could be the cause of this problem, afaik php is not something that bots can block, how they can block js, right?