Hi Victor,

Thank you for your message, can you confirm which device you have, and also if you have done the Code unit Firmware update, you can use the link below to do this,

https://my.marshall.com/support/firmwareupdate

You will also need to pair in your phones Bluetooth settings before opening the app.

How to connect

https://my.marshall.com/support/faq/838/code---gateway-bluetooth-connection-troubleshooting

Regards

Marshall Support