The widget does not appear
You pasted the snippet but the chat bubble is not there. Almost always it is one of five things, and two of them fail quietly, so work down the list in order.
A wrong Bot ID shows nothing at all
The one-line snippet needs the exact Bot ID. If it has a typo or a stray space, the loader stops and no bubble appears, not even an error. Copy the ID fresh from your bot's Embed panel, and confirm the script actually sits on the page, right before </body>, and is not blocked by an ad-blocker.
It shows in preview but not on the live site
That points to a visibility rule. The widget can be set to hide on mobile, hide on desktop, hide when your team is offline, or hide for certain countries or domains. The dashboard test sandbox ignores all of those, so if the bubble shows there but not on your own site, a rule is hiding it. Check your bot's appearance and visibility settings.
The bubble is there but the bot will not answer
If the launcher appears but every reply says the chat is on hold, that is the plan, not the code: a paused bot or an expired trial. Un-pause the bot, or renew the plan, and answers resume right away. To tell a real fault from this, check the error code the bubble shows.
Open your live site in a private or incognito window so you are not looking at a cached page. The bubble should sit in the bottom corner of every page where the script is present.