If you receive the error stating "Google error: Couldn't sign you in", it is because your sign-in settings don't meet WFU's 2-step Verification policy. To fix this, 2-step verification needs to be enabled.
In order to get your account re-activated so that you can enable Google 2-step verification, you must call or email the School of Business Help Desk at 336-758-4126 or firstname.lastname@example.org.
Once reactivated, you MUST enable Google 2-step verification or you will not be able to access your account.
Information on Google 2-step Verification: https://www.google.com/landing/2step/