I had disabled the ring, (after having it registered and what not) but hadn't thought to also disable the screen lock. When my phone's screen blackened, I was left with having to unlock my phone without the use of the ring. There's an email input section, but after inputting the correct email and password, I keep getting "invalid credentials, and cannot unlock my phone.

Can anyone provide any support?

[Edit]: I've fixed the issue, if you have gmail's 2-step verification enabled, you cannot access your phone if you made the minor mistake I did. Simply disable 2-step verification, and attempt to relog into the phone, and you'll have access again. Then re-enable 2-step verification, if you please.