Problems with Facebook custom domain name? Check your settings.
I recently discovered a Facebook bug that may not be allowing your Facebook page to display properly. If you have registered your custom domain name on Facebook, i.e Facebook.com/companyname you should be able to type it in and go directly to your page when you are logged out of Facebook. However, some Facebook pages will direct you automatically to Facebook.com. How to fix this issue?
Check your page settings. Go to Manage Permissions on your Facebook page. Make sure no country is selected and your age restrictions is set up to 13+.
This should do the trick and now your custom domain name will work properly. I hope this is helpful. Have you checked your Facebook page when you are logged out to see if it’s visible to people? Does it work properly?