Onboarding/ Manage reservations of goods

Hi friend !
This app manage reservations of goods from customers, and avoid buying up all goods by one customer.
This app will solve the problem of people’s long line before the drugstore’s opening.
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So I use my imagination to be able to present it accurately so customers can understand it through images without having to read it all.
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Hope you like it and feel free to leave comments and feedback. Nice day ^^