React Native developer Hello Guys

We are looking for React Native developers to add small features to mobile apps.

We are in URGENT need to develop and add these small features and after we will have more works going forward.

Platform

Mobile Apps: React native
Backend: WordPress

Current Requirement

We have will provide you APK, Source code, and Barcode images that are needed to scan to add the scanned product to the cart.
1. Add an Extra Input box on the checkout screen for Email on which users can add multiple comma-separated emails like "test at test.com, test2 at test.com"
2. Once an order is placed successfully, currently, the system is already sending email notifications to Admin and registered user already so we just need to send the same registered user email notification to these extra entered emails as well.
3. Above functionality should be working in both Android and IOS platform
4. Publish Apps on Android store and Apple stores, Necessary access will be provided

Please provide your work sample in react native and provide estimated time and cost to complete the above small task and published it to both android and apple stores.

Thanks
Android, iPhone, Mobile App Development, React Native, Wordpress