Openvpn – Issue with site to site OpenVPN

So my end goal is to utilise OpenVPN to connect to a remote IP camera. The reason I am going down the route of OpenVPN is to try and overcome the carrier grade NAT that prevents me from doing port forwarding and having a static IP without paying $$$ every month for the privilege.

So below is what the topology looks like, now I can ping devices on Site A LAN (192.168.1.0) from both Site B and C so that's good and proves the VPN is working.

But I cannot ping the IP camera which is situated on Site B (192.168.2.0) from either Site A or from Site B which is my end goal.

I'm still not a 100% sure that my config is correct or if I am missing something.

net.ipv4.ip_forward=1 is enabled on both the OpenVPN server (Debian 8) and the Raspberry Pi.

The other thing I was considering is do I need to set the IP cameras default gateway to be that of the IP of the Raspberry Pi ?

Topology :

Server Config

port 1194
proto udp
dev tun
topology subnet
mode server
tls-server
server 10.8.0.0 255.255.255.0
push "dhcp-option DNS 8.8.8.8"
client-config-dir ccd
client-to-client
route 192.168.2.0 255.255.255.0 10.8.0.3
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/server.crt
key /etc/openvpn/easy-rsa/keys/server.key
dh /etc/openvpn/easy-rsa/keys/dh2048.pem
keepalive 10 120
comp-lzo
user nobody
group nogroup
daemon
tls-auth /etc/openvpn/easy-rsa/keys/ta.key 0
cipher AES-128-CBC
comp-lzo
persist-key
persist-tun
status /var/log/openvpn-status.log 20
log /var/log/openvpn.log
verb 3

/etc/openvpn/ccd/flexo_client

push "route 192.168.1.0 255.255.255.0 10.8.0.1"
iroute 192.168.2.0 255.255.255.0[/oconf]

client config

client
dev tun
proto udp
remote x.x.x.x 1194
resolv-retry infinite
nobind
persist-key
persist-tun
mute-replay-warnings
ns-cert-type server
key-direction 1
cipher AES-128-CBC
comp-lzo
verb 1
mute 20
topology subnet
ca - XML
cert - XML
key -XML
tls-auth - XML

Routing table on OpenVPN server – Site A

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use   Iface
0.0.0.0         192.168.1.254   0.0.0.0         UG    0      0        0 eth0
10.8.0.0        0.0.0.0         255.255.255.0   U     0      0        0 tun0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.2.0     10.8.0.3        255.255.255.0   UG    0      0        0 tun0

Raspberry Pi routing table – Site B

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use      Iface
0.0.0.0         192.168.2.1     0.0.0.0         UG    303    0        0 wlan0
10.8.0.0        0.0.0.0         255.255.255.0   U     0      0        0 tun0
192.168.2.0     0.0.0.0         255.255.255.0   U     303    0        0 wlan0

EDIT:

Static routes on router (192.168.1.254) – Site A

Destination     Gateway         Genmask
192.168.2.0     192.168.1.143   255.255.255.0
10.8.0.0        192.168.1.143   255.255.255.0