Where can I get Navision NAS Service msi for NAV2013 R2?

Hi - I have downloaded and unzipped "Scribe Adapter for Microsoft Dynamics NAV v3.1.exe".  This only contains the NAS Service .msi for Navision 2017.  How can I get the NAS Service install for version for NAV 2013 R2?  I am installing version 3.1 of adapter as the customer is imminently moving to NAV2017 but currently on 2013 R2.  We are being forced to upgrade to Scribe Insight 7.9.2 and CRM Adapter 5.5.5 now due to CRM upgrade. Tks