Adding new features and re-skin of already made react native APP

Hi
I have self-hosted web application written in PHP on top of the Laravel 8.0 framework and bought compatible ios/android app made I think in react native:
https://play.google.com/store/apps/details?id=vendor.app.mobidonia

Have source code and documentation.
https://mobidonia.gitbook.io/mobile-apps/api
https://documenter.getpostman.com/view/8538142/Tz5ndzTX

I need:
+ redesign of app ( I will provide new design)
+ splash screen
+ add google ads in footer
+ contact details
+ feature – Call waiter – when guest in bar open in his own mobile phone web based application he can click to call waiter to table number X. For this feature is in web application is used Pusher.com That I need to have in mobile app also.

At this moment app can only show and manage orders what guest make in web application on his phone.

So please give your offer, links to previous works, and what time you need to do it (it is not rush).

Let best developer win
Kind regards