Ipsec tunnel betwin rut 956 and sophos traffic is blocked

i managed to setup a tunnel betwin rut 956 and sophos everything is working fine the tunnel is up the traffic from rut to sophos is working but not the way around however when i desactivate the firewall in teltonika everything work fine so i belive If disabling the firewall on the Teltonika RUT 956 resolves the issue and allows traffic to flow from the sophos network to the Teltonika network, then it’s likely that the Teltonika firewall is blocking incoming traffic from sophos network. and i need help To solve this problem,