Hi Glyn!
It looks as though this particular engine was created using the platform API via the Cloudflare app. The Cloudflare app is only able to be run against the exact domain that’s configured to your Cloudflare instance. There is also some otherwise squirrelly behavior due to the Swiftype app for Cloudflare no longer being actively supported. Also, we are actually in the process of working towards deprecating the app altogether. I’m sorry for the bad news on that front.
To have access to the full suite of features Swiftype has to offer you’ll want to sign up directly through Swiftype