Routing Problems in VyOS

Hello everyone,
I setup a IPsec VPN Tunnel between our site and another site, everything working fine but I recently found out that we don’t have access to that site over WiFi IP range, I can ping everything on that site but when I wanna try to ping by WiFi I can’t see anything. we have two separated ranges for WiFi and Wired Networks!
Could you please advise me to find this issue!

Regards

Hello @Ali, maybe in this case you have an MTU issue which can be fixed with clumping TCP MSS?
Did you use VTI interfaces?