If you’re wondering why you can’t post this on Facebook, there are two possible reasons. First, Facebook’s spam filter is blocking certain links. In some cases, it’s simply triggered by a user’s actions, such as clicking on certain links. If you’re unsure of why Facebook is blocking a specific domain, you can check the Community Standards. Facebook uses an automated algorithm to review content to determine whether it’s appropriate for posting.
The second reason is that you’ve added prohibited links to your bio link. The most common cause of this error is a network issue. In that case, changing the Wi-Fi modem’s settings should fix the problem. If all else fails, check if the link is blocked for the entire network. If it’s not, contact Instagram support for help. Then, retry posting the link.