It's likely an issue due to the ROMs that you have.
Open up C:\Users\<Your User>\.pf\rom
and delete/remove what ROMs that you have there. Re-launch the game after and add the ROMs back via the game client if you believe that they are the correct ones, then attempt to log in again. If the issue persists, then you likely have a wrong ROM, or a bad dump, and you should use a different ROM or re-dump your games.
Make sure that you're also using English ROMs, other languages will not work. However, these will see support sooner or later.