Starter plan: Usage confirmation

I have just moved from hobby to starter.
Project 1: Python service (0.5 CPU and 512MB)
Project 2: static web project

I should have seen all the stats reset to zero since I started the next paid plan. Can you clarify why it was not reset?
Will the billing happen on 18th of each month as I have started the paid pack from today?
I want my service to run only at fixed time of the day, how do I configure this?
If my service is live and no calls are hit, will that still be considered for instance hours?
Does the same 7$ be used for both instance hours and pipeline minutes or are they both different?

FreeInstance Hours: 58.33 hours / 750 hours
Free Bandwidth: 0/100gb
Free Pipeline Minutes: 29 / 500

Regards,
Harsha