If you use Moom Classic (previously known as Moom 3), you may run into a situation where it doesn't launch at login. Further, when you enable the "Launch automatically on login" option in Moom Classic's General settings, the setting doesn't stick. Thankfully, fixing both of these issues is simple:

1. In Moom Classic, make sure the "Launch automatically at login" option isn't checked (in General settings).
2. Quit Moom Classic.
3. Open System Settings → General → Login Items
4. If Moom Classic is listed there, remove it.
5. Reboot
6. Launch Moom and enable the "Launch automatically at login" setting.

This should fix the problem, but if it doesn't, please open a support ticket and we'll get the problem resolved.