This zone is not connected to the central player database
From ASSS Wiki
When trying to enter a zone that is not connected to the SSC-biller, the Continuum client will prompt the user with the following message:
This zone is not connected to the central player database. You should use a different password for this zone as your passwords may be exposed to zone staff. Do you wish to login using the current password?
The Continuum client triggers this message as a security mesure, in order to better protect users from username and password theft. It has often been considered a nuisance, as it sometimes scares new players away from non-SSC zones.
You can ignore this message at your own risk.