DFD and Context Diagram Required

Hi i have a mini project and here the the description Mini project to apply for the food court mobile app; Front End: In this scenario, we are going to remove food court cash card and then use QR payment (NOT NFC) on our phones, definitely, this mobile app has a menu that shows the list of food and the drink provided by the food court and their pictures and prices and meal sizes, Customers are going to get points as they pay their meals and drinks with our app which later they can redeem the points to get food or drinks. Moreover, we have the discount function on particular food (e.g 5% on Wednesday) and promotion for new dishes as well as bundle promotion which shows that if you get particular dish you can get particular drink with less payment or for free. Back End: Generate Report to manager (e.g monthly, …). Top or popular food of the month. I need context diagram & DFD level 0 + level 1 fully designed and completed in [login to view URL] with jpg/png and soft files if I need to modify later, dead line by 2 hours, all shapes and processes completely named and designed + arrows use description in DFD Here is ERD and some examples of style and format of DFDs and Context that I need: