1. Applet is not online or offline: McDonald's Applet may not be online or offline on WeChat platform. This may be because McDonald's is updating or adjusting, and the applet function is temporarily closed.

2. Inaccurate keyword search: Sometimes, the keywords we search may not completely match the name of the McDonald's applet, or the input is wrong. It is suggested to check whether the keywords are spelled correctly and try to use more accurate keywords.

3. Regional restrictions: McDonald's applets may be restricted or promoted in some areas and cannot be searched in other areas. This may be because McDonald's is carrying out regional promotion activities, or it only provides applet services in specific areas.

Extended content: In addition to WeChat search, you can also find McDonald's applets in other ways. You can try to search for McDonald's applets on McDonald's official website, McDonald's APP or other third-party applet platforms. In addition, you can also pay attention to the official WeChat account of McDonald's, and they usually provide the entrance link of the applet in the official WeChat account. If the above methods still can't find McDonald's applet, I suggest you contact McDonald's customer service staff to consult the specific situation and seek a solution.