how to block device from using my unifi ?

[kenshin_katana]

Hi @hasnizan,

The simple ways is by regularly changing the WIFI password and using the latest WIFI encryption(e.g WPA3) to your WiFi network. It works every time.

[Kasmaini]

You can block that devices by block their MAC Address by login to your WiFi Router

[hasnizan]

I've tried to change my password but idk why the website like something error . Btw thankyouu !