If you are using Windows:
Serato DJ requires a software called Bonjour to be installed on Windows computers for the Serato Remotes API to connect with external programs.
You must download and install Bonjour before SoundSwitch and Serato DJ will connect.
You can download Bonjour here from the Apple support website.
Once you have installed Bonjour, you will see SoundSwitch appear in the Active Serato Remotes section in the Serato DJ Preferences
Email us at email@example.com if you are still having trouble connecting SoundSwitch and Serato DJ.