Publishing Rise 360 Web-based Output

We’re running into an issue with a client’s Rise 360 web export.

After exporting for web and providing the files to the client’s IT team, they attempt to upload the module to their website. However, when they try to launch it, they’re prompted with an Articulate login screen and can’t proceed any further.

Has anyone experienced this before? Any ideas what might be causing the login prompt when using web output?