There may be several reasons why Douyin's submission cannot be submitted: Content violation: Douyin has strict community regulations and prohibits the posting of content involving vulgarity, violence, pornography, illegality, etc. If your video violates these regulations, it may not be submitted. Network connection problem: If your network connection is unstable or too slow, it may cause the submission to fail. Make sure your network connection is stable and fast enough. Account problem: If there is an abnormality in your Douyin account, such as being banned, uncertified, etc., it may also cause the failure to submit. Check your account status to make sure it is normal. Technical failure: Douyin's server or software may occasionally fail, resulting in the failure of submission. At this time, you can try to try again later, or contact Douyin's customer service. Video format or size problem: Douyin has certain restrictions on the format and size of submitted videos. If your video format or size does not meet the requirements, it may also cause the submission to fail. Make sure your video meets Douyin's submission requirements. If none of the above is the problem, it is recommended that you contact Douyin's customer service directly, and they may provide more specific help.