To solve a 301 Moved Permanently error you essentially need to reset your account. Please perform the following steps:
Article ID: 546
Created On: Wed, Nov 16, 2011 at 3:58 PM
Last Updated On: Sun, Oct 14, 2012 at 11:00 AM
Online URL: https://www.2doapp.com/kb/article/i-get-a-301-moved-permanently-error-when-syncing-using-caldav.html