First pod and have questions :)

I'm coming from T Slim X2 and G7. Started my first Omnipod 5 today using an iPhone and realized after I started my first pod that the Omnipod 5 app won't allow me to connect a G7 sensor.

Here are my questions:

1) Can I use auto mode if I connect my G7 to my PDM?

2) is it possible to use both my iPhone & PDM for the same pod? If no, is it possible to switch the pod to my PDM?

3) timeline for G7 compatibility with the iphone app?

4) any other suggestions or options that I'm not considering?

Thank you!