Pfsense: OVPN site to site + NordVPN, Client site can ping and access Server site, but Server site can't ping nor access Client site

Networking & Firewalls
1

I am new to pfSense.
I am able to set up pfSense + NordVPN failover, works OK :frowning:
I then disabled NordVPN interfaces and setup Site to Site (peer to peer) OPVN between Main Office and branch office. Works OK, can reach Win Servers, NAS, but not Win 10 nor Win 11 computers (will try to figure out later).

Now is the Question: I then enabled NordVPN interface. The following are the issues:

  1. Server site can’t ping nor access Client site’s device;
  2. Client Site can ping and access Server Site NAS, but not Win 10 nor Win 11 computers (will try to figure out later).

Is there anyway to split all public IP traffic through NordVPN and all traffic between office to Office OVPN?