Customers may doubt or distrust you. Even if customers agree to add your WeChat, after adding you, they may still reconsider whether to express their opinions or questions to you. This may be because customers think you can't solve their problems, or they are not sure whether you have the ability or willingness to solve their problems.
The customer may have found another solution. After you contact customers, they may have found someone else or a way to solve their problems, so they no longer need your help.
Customers may need more time to think or prepare. Customers may need more time to consider their opinions or questions and find out the best way to express them. In this case, you can give customers some time and then follow up their feedback.
It is recommended that you take the following steps to solve this problem:
Give the customer some time. If the customer disagrees, don't ask immediately, give them some time to think and prepare their feedback.
Clarify customer expectations. If you can contact the customer, you can try to clarify the customer's expectations and determine whether the customer needs your further support or solutions.
Build trust. Building trust with customers is the key to solve this problem. You can build trust by providing useful information and support and answering customers' questions as soon as possible.
I hope these suggestions can help you solve this problem.