How come every time I plug the usb into my Galaxy S8 I have to give usb permission to Sync 3? Shouldn't it just need it one time and remember it for evermore?

With my iPhone I have never had to give Sync3 permission for anything other than mobile apps and that was via the Sync screen.

And while we are on the subject, why can't I play Pandora on my Galaxy via Sync 3 sound system without having to turn on AA like I can with my iPhone without Car Play?