Where is the chat window of Ele.me merchants?

This chat window is in the Hungry Me software. The specific operation method is as follows:

Tools: mobile phone, Hungry Me software.

1. Open the software and click the order option on the page.

2. Select the order. On the order page, select the order merchant store to be contacted.

3. Click on the online contact option.

4. Enter the message in the chat box and click send.