When I access my website (https://www.infodifesa.it/) via the Facebook browser (via clicking a link on a wall), I get "error connection reset". Only first time. Second time it work as well.
Thanks for posting. I was able to access your site without any issues. Try clearing your cache settings before clicking on it from Facebook, if the issue continues you should contact live support. https://www.godaddy.com/community/Account-Management/Godaddy-Customer-Support-contact-phone-numbers-....
The problem is not just mine. All visitors to my site have this problem and send me screenshots. They have this error only by facebook app on mobile and with android.