When the admin pressed the 'chat with user' button, why did the admin receive a conversation history link instead of the message from the user?

When the admin pressed the 'chat with user' button, why did the admin receive a conversation history link instead of the message from the user?

User messages will appear in the Slack channel after the admin has picked the ticket. The admin can also go to the conversation history to check what the user had inputted before.

You may refer to the Standard Procedure of building a Slack channel and click here to get hands-on about your Slack channel.