Just bought the pi4, but I can't figure it out

I'm confused on how to make it work. How does the pi get internet from? And how does the pi connects to the phone?

I'm just getting an android when my tesla connects to the broadcasted url.

Auto kit app shows please insert the product. How do I connect?

My pi is powered by my central USB. It's broadcasting the wifi, tesla is connected to the wifi and visiting device.teslaandroid.com.

Please help 🙏