Not all kind of names are allowed on Facebook. If you wantto add an Er. Or Dr. before your name on Facebook you won’t be able to do so,
because the policies of Facebook won’t allow you to. To know how to add these
prefixes before your name and to know what all things you should take care of,
while writing your name on Facebook, call us at Facebook helpline number
1-844-659-2999and get all your queries solved.
https://monktech.net/facebook-contact-help-line-number.html