Server for Dating service

There is available API. It is necessary to change the payment system, some improvements in functionality.
Initially, the server was on php. It did app for IOS and for Android.
After, it still made the site and improvements on the Python. For example, there are bots profiles and realizovana logic chat-bot.

In fact, we need to see the code, and finish what is necessary, and should be:
to change the payment system on the website
- add API methods for payments in mobile apps (now there are in-app purchase google/apple)
* in the process may emerge more improvements

Alternative.
You can not modify what is, and to completely rewrite the API again (or buy ready-made Dating script), respectively, the volume of work of the other.

Which option you will choose – it will depend on what you will give a verdict on the existing code and its viability.

You need a free time, responsible and professional in Python.