hey dude, I have tried to translate your words into English, it sees that when you configure the device, it will be reset automatically?  I'm not sure if the translation matches with what you meant, if it is really the auto reset problem, I think you can try to check the power supply to make it is stable enough, and also check if there is any other POE device in your network, maybe you can temporarily disable or remove these kinds of poe devices to have  a  simple test.