Delete Unauthorized by CalDEV server

My contacts in eMclient are supposed to sync with my icloud.com account. They often do. Meaning I can set up a contact in eMclient it will appear in icloud.com, and visa versa. However, often when I go to delete a contact I get a response that I cannot because it is “unauthorized by the CalDev server.” Yet, the contact I want to remove is seen in the icloud.com page. I don’t know what the Caldev server is. I remember that the contacts were copied from Outlook when I set up eMclient.

Why is this happening? Are the original contact in another database somewhere?