I can fly during the day without any problems, but when I try to fly after sunset, it gives the "max altitude reach" error and performs unstable movements and a crash is inevitable. The same thing happened every time. I tried the updates. But it still didn't work.

How can I fly at night?

Here's a reply to a similar question.

https://forum.dji.com/forum.php? ... 359&pid=3443909

Flying a DJI Neo at night is not recommended as it lacks the necessary vision system capabilities to navigate in low light conditions, and attempting to do so could result in unstable flight or crashes; if you absolutely need to fly at night, your only option is to use manual control with good visibility of your surroundings and potentially adding additional lights to the drone for better visibility, but be aware of the significant risks involved.

Hi there. Sorry for the inconvenience. Kindly confirm if the device had any crash. Also, please provide us the video footage of the issue for further assistance.