does your wifi router has two brand ? 5G and 2.4G ? make sure the PC windows netcut is running at same connection as the device you want to control. sometime, they may look like in same network, but actually physically in separated wifi router access point.
we can confirm that no change for netCut 3.0.74 for a weeek now.
also, take a look of IPv6 in your router, see if you can disable IPv6 sometime phone chose IPv6 preference.