The following network was constructed using a router with VPN server function.
I want to access Windows PC from Client using OpenVPN.

Client [10.8.0.AAA]
Router① []
  | (Port forward 1194 due to dual router status)
WindowsPC [192.168.1.BBB]
Error message

Although we were able to connect to the VPN server and issue an IP,
Client to WinPC ping does not pass.
(WinPC to Client ping will pass)

If a VPN connection was established, it was recognized to behave the same as the Local environment,
Is some setting required on the WinPC side?

Supplemental information

Router②'s routing table is as follows (automatically registered by the system)

Network destination Subnet mask Gateway Interface tun0 tun0 lan wan wan