The Appointments Report shows you all of your bookings, including those made online. You can filter the report to only show appointments made online via the Slick app.
Go to your Reporting page, into Reports List and select your Appointments Report.
By default, the report will give you all of your appointments for the current day. Simply change the dates to display your desired date range, and use the Booking Type: drop down menu to filter the report by Slick.
All of your appointments made via the Slick app, for that date range, will be displayed in the report.