Please take time in your applications, low quality applications won’t be considered

Problem Description

In the US there are franchise educational institutes. An example of this is Kumon. They often have 200+ students, and managing the time each student comes in and goes out is a problem. They then use our website/app, where we manage everything for them.
Here's the full list of required features:

Have time changing functionalities

Managing payment transactions between parents and teachers

Built in chat app for teachers to talk with parents

We have a page for institutes near you. The website/app finds the closest independent institute near them. The institute can also pay for ads to rank higher

A method for teachers to clock in/out, trading time schedule...

We'll provide a figma

This bounty requires you to build a flask backend API server. This server will handle all the main requests. You’ll be working with xata db(xata.io). It should include tokens & api security. You’ll get a figma in hand of the product design, and the backend should be built accordingly. I’m mostly a backend developer myself so I can help.

Acceptance criteria

Upon acceptance your deliverables are a well organized flask server code, built using flask blueprints. It needs to be secure, everything must be encrypted, hashed, salted… It needs to connect to our db, and not use too many reads and writes. This may be a small bounty, but I’ll be posting larger ones in the future, and if you’re accepted for any of my bounties, you’ll be favored.

I expect this to be done around the due date, if that's not possible, don’t bother applying.