You don’t need to pair the Muse unless you have the old 2014 Muse with two USB ports.
The most common cause of connection issues is the Muse connecting to another app or device. Check the lights on the Muse. When you turn it on it’ll sweep the lights up and down to show that it’s searching for a device to connect to. When it connects, then all the lights turn full on.
So if your Muse lights are full on, but it’s not connected to Muse Monitor, then it’s connected to something else first! If you want to connect the Muse to your Android tablet, then first make sure that both Muse Monitor and the Interaxon Calm app on your iPhone are fully closed. On most devices you can do this by double tapping the home button and swiping the app off the screen. If it’s still connected to something, then check the Interaxon Calm app is also closed on your Android tablet.
The other thing you can do to control which device the Muse connects too is to turn the bluetooth on/off.