Changes in android project

I have a client android app project where we need to add some new features. Below are the key highlights of the features, more will be discussed over chat. Backend changes listed below are completed, only need to add it to android. -New features on android app -- - [ ] •add promotions coupon page in admin page which i can edit , remove ,and generated auto . - [ ] •add charging client account in admin page ( icon for charging and balance)  . - [ ] •add  balance to apps and form for order charging client balance . - [ ] • add popup page for offers from providers and the value of offering it may admin determine from backend . - [ ] •add popup page for client  accept this offer with coupon he can apply , and if confirm it will charge his balance immediately (Logically) . Any changes if required from the API or backend will be provided. Please note the project requires translations and follows RTL. Expected budget is 70$.