In order for the chat to work on a website, the domain needs to be added to your giosg account.
You can add and manage domains by going to Settings -→ Rooms, or Settings → Domains. Don't forget to add the giosg script tag to the new site.
When adding new domains, please note that the domain should be in basic form, for example giosg.com instead of www.giosg.com or www.giosg.com/something
When the domain has been added, you can then proceed to set up rules for how the chat should work on the site. You can also define how the chat should look like in both desktop and mobile.
Finally, make sure your new room has a router. The chat then goes live once someone goes online in the chat.