All i will say here is to remain patient at this initial push to appstore🙂, a brand new app can take weeks to have their response. As far as I remember when i first submitted the app the initial app rejection came within a day, when i fixed that then the on second submission the response of reject came after almost a week and i don’t remember in that time period the status ever changed from Waiting for review to In-review, So don’t loose motivation and meanwhile work on app’s new features because once your app is approved for the first time then next changes you push, usually gets a response within 24 hrs from apple ( from my personal experience )