Machines in main network to connect to RaspAp machines

[ebiscaia]

First, thanks for developing such a nice piece of software.
Second, I am not sure if this is the best place to post this, so my apologies in this case. More than happy to post it somewhere else.

So my Raspberry Pi is connected to my main router to provide VPN to some machines. For that, I created a subnet where these machines are allocated. The scheme bellow represents my network
Main router (192.168.1.1) -> Raspberry Pi (eth0: 192.168.1.254)
-> other machines (192.168.1.x)
Raspberry Pi (wlan0: 192.168.2.1) -> machines (192.168.2.x)

Machines under RaspAP can connect (ping, ssh) with machines out of it but not the other way around. Is the a way to make it happen?

Thanks,

Eduardo