As far as "not very polished UX", after connecting it's been nothing but the standard CarPlay interface. The instructions say there's a web UI accessible via wifi where you can install updates or change configuration but I had no need to use it. Just connect with Bluetooth, wait a second, and accept the "Connect to CarPlay" popup.
https://slickdeals.net/f/16869551-carlinkit-5-0-cpc200-2air-...
As far as "not very polished UX", after connecting it's been nothing but the standard CarPlay interface. The instructions say there's a web UI accessible via wifi where you can install updates or change configuration but I had no need to use it. Just connect with Bluetooth, wait a second, and accept the "Connect to CarPlay" popup.