finishing dating app on android and ios & website

I need a project finishing which will need:

payment system intergrated into the back end admin panel

reoccurring payments integrated

Push notifications for matches and any inbox notifications

Advert to pop up on exiting the app from either playstore for none subscribed members

The project is coded in the following...

Node.js and Express for backend, PostgreSQL for database, React-Native for apps, react and js for website. frontend of the website also is done with CSS and HTML