Tik Tok is a social media platform, and its advertising mechanism is influenced by many factors, which may lead to the failure or inaccuracy of the advertisement of the same video and copy the next day. Here are some possible reasons:

1. Advertising competition: Many advertisers want to put advertisements on Tik Tok, and the competition is fierce, especially for hot content and keywords. If the advertising platform thinks that the target audience is saturated or there are advertisers with higher bids, it may limit the delivery of the same advertisement.

2. Advertising quality: Tik Tok will evaluate the effectiveness of advertising according to the quality of advertising. If the same video and copy have not performed well in the past, such as low click-through rate or poor user feedback, the advertising platform may lower the priority of the advertisement, limit its delivery or reduce its exposure.

3. Users' interests and behaviors: Tik Tok's intelligent algorithm will place advertisements according to users' interests and behaviors. If the click rate of the same advertisement is low or invalid among some users, the advertising platform can adjust its delivery strategy to avoid displaying the advertisement to uninterested users.

4. Daily budget: After advertisers set a daily budget limit in Tik Tok, some advertisements may stop running after exceeding the budget limit. This may be one of the reasons for inaccurate delivery.

In a word, Tik Tok's advertising involves many factors, including competition, advertising quality, users' interests and behaviors. These factors may lead to the same video and copy not being delivered the next day or the delivery effect is not good. In order to improve the effectiveness of advertising, advertisers are advised to optimize advertising content and strategies regularly and contact the customer service team of Tik Tok advertising platform for more specific help and suggestions.