To start with, try restarting your device:

1. Take off your Spectacles
2. Press and Hold the Left and Right Button of your glasses for approximately 5 seconds. The two blue inner LED will no longer appear.
3. Put on your Spectacles and it should automatically boot up. If it does not boot up automatically, try pressing either the left or right button for approximately 5 seconds. 

After restarting your device, check the following:

1. Your next generation Spectacles need to be turned on to establish a connection to your phone..
2. Verify your Spectacles (2021)  is on the Lens Carousel and the same Wi-Fi network.
3. Verify that “Spectacles (2021)” is selected in your Project Info settings in Lens Studio

If you exhausted all the options above then please get in touch here.