I build my product tour and when I get to stage 5, or add another step, it says that the URL doesn't match and the site can't be loaded.

The challenge for us is that we built our portal via Stacker (a 3rd party front end linking with airtable) and to get intercom on our site, we added the code that was generated and sent it to the guys for them to load on. It appears that there may be an issue with how it's configured?

Can anyone assist?