wordpress plugin rejected, unfortunately we found it isn't at the quality standard required to move

I recently posted a WordPress night mode plugin in the Codecanyon Marketplace
And after a while, I received the “unfortunately we found it isn’t at the quality standard required to move forward” message.
I have thoroughly read the plugin documentation and tried to follow all the instructions.
But my plugin was rejected and it is very important for me to know why the plugin was rejected.
The next important point for me is whether the problem was with the coding structure of the plugin or the images and content of the product or anything else.

The plugin demo link: http://dark-mode-aylin.arasdev.com/

I don’t know if your plugin is compatible with all themes but your demo looks broken;

Do you think it can be a reason for hard rejection? @egemenerd