There are instances where spammers can use your snippet code into
their website. This might create an artificial increase in chat volumes
through harassers or spammers. Adding your website URL will restrict all
the incoming chats from other domain.
Go to "Settings".
In the Web Embed section, click on the name of the embed, to enter the Embed details page.
Hover over the “restricted “section, and click “Edit”.
Enter your domain URL click “Save” to confirm the changes you have made.