Chat GPT shows on localhost:3000 but not my public website?

I’ve added a Voiceflow Chat GPT to my next.js boilerplate template. When I run localhost:3000 it shows up and works just fine. However when I push changes through to Github → Vercel → my website, it’s not showing up? Any other changes I make and push work, just not the Chat GPT. Anything I’m missing?

I don’t fully understand but

Try 0.0.0.0:3000

Thanks for your reply - my problem is I can see and use the Voiceflow Chat GPT widget locally on my browser (localhost:3000) but when I go to my website, the widget does not show up.