Error: Not A Registered Email Address
You are getting this error because you have signed-in using an email address that has not been used to provide consent to this SharePoint Domain.
All Captisium Administrative actions require that the Admin sign-in to the Captisium Control Panel using an Email Address that has performed a consent action in the past.
You need to sign-in to the Captisium Control Panel using an Email Address that has performed a consent operation in the past.
1. Sign-Out of your current Microsoft Account.
2. Sign-In with a Microsoft Account that has provided consent to one of the domains that are associated with your SharePoint URL.