VPN no longer working after moving DHCP server to router

I am preparing my SBS 2008 environment for migration to Server 2012 R2 Essentials.  I moved the DHCP server to the router (a Netgear R7000 with standard firmware).  I am able to access RWW and CompanyWeb via the router from external locations. 
With the VPN, however, I can only connect but cannot access any network resource (including file shares).  The VPN is supported by the SBS server with RRAS.  I didn't change any of the configuration because I didn't think any of it needed to be changed.  The
router just needs to get it's reservations from a different DHCP server, right?  Anyway, would appreciate if someone can shed some light on what's going on here.
JeHarry

Hello JeHarry,
I would recommend you to follow the TechNet to migrate SBS 2008 to 2012 R2 Essentials. Don't skip any part.
https://technet.microsoft.com/en-us/library/jj200141.aspx
Troubleshooting VPN Issues on 2012
http://blogs.technet.com/b/sbs/archive/2014/06/11/troubleshooting-common-vpn-issues-on-windows-server-2012-r2-essentials.aspx
Binu Kumar - MCP, MCITP, MCTS , MBA - IT , Director Aarbin Technology Pvt Ltd - Please remember to mark the replies as answers if they help and unmark them if they provide no help.

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