Thanks for pointing that out, we're working on getting those links swapped out right now and replacing the documentation.
To address this issue, go to your Microsoft Dynamics in your admin area and click "Edit" on the Field Sync Details box. Ensure that the fields listed in that above error box all have a check mark next to them, and they are required for MSI to function. Within a few minutes the MSI Status should change to a green check mark with a "Configured" status. If that still doesn't resolve the issue please feel free to open up a Support Ticket.