Yes, [EISOnline](https://eisonline.classictw.com/) is down. So this means you'll have to wait a little longer to get your TWGS registration codes. Deal with it.
Of course, if everyone were playing [Lunar: Eternal Blue](https://web.archive.org/web/20000000000000*/https://www.dailyradar.com/reviews/game_review_1110.html), you wouldn't have to wait for reg codes.