When the image becomes unclear, please consider the following points:

1. Check if the resolution of the source video has changed.
2. If the product shows a noticeable decline in image quality with the same source video, please check if the projector is overheating. You may cool it down or use it in a lower temperature environment.

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