Unifi VPN ipsec phase 2


i have site A with iprange A
I connect to site B
on site B i need to be able to connect to iprange B and C
B and C can see that the VPN tunnel is open and connected also they can see that there is traffic and can access my gateway and ping in the network.
I cant do anything from A-B or A-C
how do i fix this ?

is it the settings that i have to do in CLI ??