If you're encountering issues where your DMX interface is not detected in SoundSwitch, you can try the following troubleshooting steps:

1. Reinstall SoundSwitch: Attempt to resolve the issue by reinstalling the SoundSwitch software. This will also reinstall any necessary USB drivers required for the SoundSwitch hardware.

2. Check Firmware for Third-Party Interfaces: If you're using a supported third-party DMX interface, ensure that the interface's firmware is up-to-date. The most recent firmware is often required for compatibility with third-party interfaces.

3. Verify Connection: Make sure that the DMX interface is correctly connected to your computer and that it's powered on.

4. Check Hardware Preferences: In SoundSwitch, navigate to the Hardware tab in the Preferences or Settings menu. Confirm that your DMX interface is selected and recognized there. If it's not appearing, you may need to reconfigure or select the interface from the available options.

5. Contact Support: If you've tried the troubleshooting steps above and your DMX interface is still not recognized in SoundSwitch, you should get in touch with SoundSwitch's support team for further assistance. They can provide specific guidance and support for your setup.

You can contact SoundSwitch support at support@soundswitch.com. They will be able to assist you in resolving the issue and getting your DMX interface properly configured in the software.