WireGuard VPN Access LAN devices access

What happened to LAN access when using VPN. I have several routers that I use for creating connections from customer sites to my Office.

I have this all working. The router in the field is setup to VPN to my office. I am then able to access my devices on the customer site from my Office.

I upgraded to Firmware 4 and LAN access is broken. Can someone help. Temporarily I have reverted to firmware 3.