Chat and Voice Messnger and a Shopping Cart with Payment Checkout Combined into it.

I have a need for two application components I want to integrate into our website called https://pay2mate.com

1. Voice and Chat Messenger:
I need a fully developed and working Voice and Chat Messenger, developed in
Python which I can integrate into our website. Before you bid, make sure that you
already have code for this application. Otherwise your bid will be rejected. I need to
see a sample or a demo working version before I can place an order.

2. Shopping Cart Code in Python with a Payment Gateway Checkout feature:

We need to a Shopping Cart with "Paypal Checkout" type Checkout feature in Django where the Item and price details are captured and those details are sent to pay2mate payment gateway, So that Pay2mate will work like PayPal

It is Checkout Button to simulate a PayPal Checkout like button with our Payment system.

https://www.paypal.com/in/brc/article/paypal-checkout

1. User Goes to shop of our merchant
2. Buys Item and goes to his cart screen
3. Cart Checkout has our Payment Button
4. User Click takes him to Pay2mate website Checkout page
5. Payment completes and the user payment success/failure is returned to merchant site
6. Transaction completes and Wallet updated
Please note that we don't need PayPal checkout integration. We need our own Checkout and our own code in place of Paypal Checkout.

All the code has to be in Python and yo should have already made a similar application in Python.

Please post your details with the Bid and a URL where these applications are working already.

Thanks
https://pay2mate.com
The World's Digital Payment Gateway