Never Mind, I used JunnOhlala's method and worked perfectly.

Quote Originally Posted by JunnOhlala View Post
Lets try on your PC. go to My Document > My Game > FINAL FANTASY XIV - A Realm Reborn > FFXIV_BOOT ( Open as Notepad )

<FINAL FANTASY XIV Boot Config File>

<Version>
Version 2
Language 1
Region 2
EulaAgreement 1
StartupCompleted 1 ( It was 0 before I changed it )
B4EulaAgreement 1 ( It was 0 before I changed it )

I'm not sure, It's work with you or not but I'm now passed registration code entry.
and I have no idea that Is these legal or illegal but since SE never care about customer 's problem. So Be It!!!