Unable to ping internal devices after WireGuard config

Hi, I am on pfSense 2.6 and I followed the Tutorial: pfsense Wireguard For Remote Access - YouTube to the letter but I am unable to ping the internal devices:

I am on a Mac and am using the WG app:

[Interface]

PrivateKey = Private_KEY

Address = 17.18.18.2/24

[Peer]

PublicKey= PUBLIC KEY FROM WG Server

AllowedIPs = 17.18.18.0/24, 192.168.55.0/24, 192.168.10.0/24, 10.1.20.0/24

Endpoint= WAN:51420

Any ideas ?

Could it be due to FW rules:

Lawrence:
WAN firewall rules:

Mine:

WG done.

Thanks…

Does it handshake? Is your WAN a public IP?

It’s ok now … the tutorial was perfect