Thank you for your support of our products.

Upon startup, in order to automatically adapt to the environment and calibrate the perfect projection effect, we need to increase the brightness to facilitate the system in recognizing the wall condition. The brightness will return to the optimal state once the calibration is complete. You can also manually adjust the brightness after entering the main page. 

If you are not using a screen at home, you can disable the automatic screen fit feature.

Go to Settings > Projector > Image Correction > Screen Fit

We apologize for any inconvenience this may have caused.

If the above solutions cannot solve your issue, please contact Nebula Customer Support at support@seenebula.com for further assistance.