Firstly Change your Browser Proxy Manually use one of the proxy from below given. HTTP Proxy :-
PORT :- 8080
Then Save Your Settings.
Now Open your Facebook Account Name Settings.
Change your language from English (us) to Bahasa Indonesia
Then Simply remove Your Last Name And Save it.
Now Your Facebook Account is only with First Name Without Last Name. After Completing all steps remove Manual Proxy and select use system proxy settings and change change your language back to English (us)