Peer to Peer OpenVPN - Can't access remote router.

[billsecond]

I have Site A (Master) and Site B (a remote site). I have created a Peer to Peer between the two,
On Site B, I can access the router in site A as well as the full network,
On Site A, I can NOT access the router in site B, but I do have full access to the network.
On Site B, I can access the router at site B.

I have opened up fully the firewall by allowing all in both OpenVPN and OPENVPN interfaces.

Is there anything that I may be missing?