This article describes how to block/unblock devices from connecting.
INSTRUCTIONS & INFO
From the Elevate Manager, click Wi-F user. Note: Whenever you block or unblock devices, the Wi-Fi radio resets to activate the new settings. Any devices connected to the mobile hotspot will be disconnected when the Wi-Fi radio resets.
Next to the desired device, click the Block checkbox.
Click Save.
Click OK.
To unblock devices, from the homepage, click Advanced settings.
Click Wi-Fi.
Click MAC Filter.
Click the Delete button next to the device you wish to unblock.
Click Ok to confirm.
If prompted, click Ok to restart Wi-Fi. Note: This will temporarily disconnect all Wi-Fi users.