I am trying to set up Zoho CRM to sync with Google Calendar but can't get it to display the authorization steps

I am trying to set up Zoho CRM to sync with Google Calendar but can't get it to display the authorization steps

I am trying to get Zoho CRM to add my tasks/events to my Google Calendar, but it isn't loading any information.  Is this available only in the Enterprise and Professional Editions?  I thought the Calendar sync was available to all users.