Okay follow the steps below. 1) Install an app named fing from the playstore 2) You can see who are using your wifi on the app, then hold the mac address of those users from it, yebet sew alemehonun lemawek make sure to first save yebet sewochn mac address. 3) Then open any web browser like chrome and search this :- 192.168.1.1 NB. make sure that you're connected to the wifi 4. Enter your username and password, usually 'admin' for both. 5. After logging in, go to network, then WLAN, then access control. 6. Then after changing the mode switching to block, copy paste the Mac address of unwanted users from fing to the list below and add milewn stneka the user will be blocked from it.