Cannot ping wireless to wired and vice versa

New to openwrt.

Everything works so far, I can

  1. Connect my phone to OpenWRT Wifi
  2. Connect my VMs to OpenWRT network via eth0
  3. Access internet on both on them.
  4. Ping wireless device to other wireless devices
  5. Ping all devices from router.
  6. Ping router from all devices.

But, I cannot

  1. Ping wireless devices from wired devices and vice versa

Sure it's not a wireless device fw issue?