As @Jean-Paul mentions in this post, when Beam devices are displaying Disconnected in the dropdown menus, Beam is not able to connect to Live. Try the following:
- Please make sure that the Max 8 application is closed.
- Run the installer again (click Beam in the menu bar, and then “Open Installer…”
- Make sure that the Showsync Control Surface is selected in the Link / Tempo / MIDI tab in Live’s Preferences.
- In Beam’s Preferences, make sure that Connect to remote Ableton Live is unchecked:
If this still doesn’t help - are you by any chance also using Videosync?