Hi,
Could you let us know how your IoT network was created?
If it was configured through LuCI, the issue may be related to the compatibility of LuCI with the wireless driver.
We recommend logging in via SSH and creating the network using UCI, as outlined in the tutorial: How to set up the VLAN for IoT Wi-Fi on Flint 3(GL-BE9300).
If the problem persists, please provide the following information so we can investigate further:
- Firmware version
- The exact command used to create the IoT network
- A screenshot of the relevant wireless interface in the GLUI under 'Wireless'.