Guess who...

[Starman]

Well I contacted both Sega Europe, and Sega USA here is their replies

Thank you for e-mailing Sega Technical Support.

If the original owner of the game created a Gamecube Phantasy Star Online hunter's license, you will not be able to create a second one.

There is no way to reset the hunter's license. There is no way to delete it.

There are no replacement serial numbers for Phantasy Star Online games.

Sincerely,

-Sandi
Sega of America Technical Support

Thank you for your reply.

If you cannot get those details from the previous owner of the game take the
game back to the retailer where you bought it and get a refund or a
replacement game with codes that have never been registered online. If the
codes have been registered online make sure that the previous owner is
contactable so that you can request the user name and password. For security
reasons we are unable to give these details.

Should you have any further questions please do not hesitate to contact us
again.

Thank you

With best regards
Edward Ford

SEGA Customer Services - Europe

Depressed