Domain Blocked In Facebook?
So, a lot of people are trying to get their domain unblock from Facebook.com, a Few days back I was struggling from it too then after a few google search I got my answer. So here it is.
Go to this url: https://www.facebook.com/business/help
Once you fill out the above form it will take you to the facebook support team and there you can ask them to unblock your URL from Facebook, just let them know about your url and it details.
It takes approx 24-48hrs to get the response from the Facebook team, also make sure you are opening the URL in office timing.