1 Maybe you didn't submit it because the network was bad. This possibility is relatively small. It may be that many people are logging in, so they can't bear it, and there is a problem, which leads to the display error. 3 may just explain the reason.

Maybe you haven't finished some operations. The submit button was not pressed. You can click the submit button after answering the question, even if you have finished answering. The safety education platform is an educational App launched by Beijing Yuananjiao Education Technology Co., Ltd. It completed the filing of 476 educational applications of 245 enterprises in 9 days.