GL-AR300M Port Forwards not working

[natwr]

Could it be related to this:

Can't ping the stations from the router (GL-AR300M)

I have a problem with the ping function on AR300M. After I set up the wireless network, the router can ping the stations in the WLAN, just like: root@OpenWrt:~# arp IP address HW type Flags HW address Mask Device 192.168.2.1 0x1 0x2 00:22:2d:80:1f:30 * eth0 192.168.8.190 0x1 0x2 82:92:8e:c5:dc:ef * br-lan 192.168.8.140 0x1 0x2 ec:22:80:0e:c5:91 * br-lan 192.168.8.156 0x…

??
Could it be related to the ap_isolate mode? Why did it use to work but now it doesn’t??