Thankyou for your reply Cooljak96.
I do not have experience with Facebook personally, but because it is a different login process, your password details may not be recorded with DarkOrbit.
To test, you can try the "Forgot your password?" link below the login area, and see what that brings back to your e-mail, but if you want to get the best assistance, you will need to contact Support, since they deal with all account issues. Hopefully, they may be able to suggest a way to get your details linked or transferred to the main DarkOrbit site.
There is a link in my signature for convenience.
Reason: Contact Support