Enhancements for Existing Javascript App

I'm looking for a skilled Javascript developer to enhance my existing app with various features.

Key Requirements:
- User Authentication
- Login/Signup Functionality
- Paddle Payment Integration
- Drag and Drop Functionality
- Video Integration on Canvas

Additional Details:
- The project also includes fixing existing bugs to ensure the app runs smoothly.
- I'm open to other suggestions for improving the app's functionality and user experience.

Ideal Skills:
- Proficiency in Javascript
- Experience with User Authentication systems
- Knowledge of Payment Gateway Integration
- Familiarity with Drag and Drop functionality
- Video Integration expertise

THE BUDGET FOR THE PROJECT IS FIXED - 1500INR. PLEASE BID ONLY IF YOU UNDERSTAND THIS! IF YOU READ THIS TYPE "1500INR" OTHERWISE I WILL IGNORE YOUR BID