Why can't I display the information of joining the nail group?

The message "Do Not Disturb" is turned on, so it cannot be displayed normally. The solution is as follows:

1. First, open the nail on the phone and click the address book at the bottom of the page.

2. On the Address Book page, click My Groups.

3. On the subsequent page, click Group Chat to join.

4. Next, click the position indicated by the arrow in the upper right corner of the page.

5. Next, close the message and don't disturb it.