I apologize for this, our engineers are working on fixing this issue. 1. Appreciate it if replacing the batteries with a new pair and have one more test. 2. If fails, kindly reset our U2 system in our app with the below routine: click on the 3 dots on the top left corner of the ”device“ page of our app, then select "Setting", and go for "Restore factory settings"; re-add one device only at the app and make a test then. 3. If fails, kindly take a photo on the QR code of our remote for our rference, Could you send us a QR code to our email address? Or send it to us through the app, contact support on the website. service@sofabaton.com