Open the ONN Box home screen
Go to Settings
Select Apps
Choose the add-on app you want to block
Select Disable if available
Select Uninstall if the app can be removed
Go to Security and restrictions if available
Turn on Unknown sources off
Remove any app permissions you do not want granted
Use Parental Controls if the add-on is installed through a streaming app
Set a PIN for restricted access
Block the app through your router if you want network-level blocking
Use your account settings in the app store to prevent future installs
Restart the ONN Box after making changes