Error: SharePoint URL Not Validated
You are getting this error because your SharePoint URL while registered has not been validated for administration.
Before you can use the Captisium Universal File Handler, you must register the domain that you used in your SharePoint Online URL (e.g. yourcompany.sharepoint.com). Once you complete the registration form, the owner of the email address used on the registration form, will need to confirm the email address by responding to the validation email that was sent at the time of registration.
If you haven't registered your SharePoint Online URL and completed the registration form, you can complete your registration here.
If you have completed the Registration Form, you will need to reply to the email that was sent to the email address provided in the registration form. If you want to have another validation email sent to the email address used during registration, you can request that here.