If the expert fails the 3-minute manual response rate assessment in Taobao, there may be several solutions:

1. Improve response speed: Ensure timely responses to buyers' inquiries and messages. Try to respond to buyers' questions within 3 minutes to demonstrate good service attitude and efficient work ability.

2. Optimize customer service team management: Ensure that the customer service team is sufficient and make reasonable task allocation. You can consider adding customer service staff or adjusting work schedules to improve response speed and quality.

3. Use intelligent customer service tools: Taobao provides some intelligent customer service tools, such as robot customer service and preset replies, which can help improve response speed and efficiency in solving common problems. Reasonable use of these tools can reduce customer service pressure.

4. Handle complaints and disputes in a timely manner: If complaints or disputes arise, handle and resolve them as soon as possible to avoid negative impacts on response rates. Actively communicate with buyers, explain the situation and provide solutions.

5. Learn from excellent cases and experiences: You can observe and learn from the successful experiences of other experts, and learn from their practices in response speed and customer service quality to improve your own performance and ability.

In addition to the above measures, you can also consult Taobao’s customer service or contact Taobao’s platform support team to learn more about the specific reasons and solutions for failing the assessment. They may be able to provide more specific suggestions and guidance to help improve and enhance the service level of the experts.