Subscription-Based WhatsApp Ordering Web App/PWA

I'm looking to develop a subrcription based web app system that integrates a subscription-based WhatsApp ordering system suitable for e-commerce businesses, restaurants, and wholesalers. The app should come with 14-15 pre-designed, professional, and clean landing pages for creators to choose from.

Key Features:
- Order sent to the owner's WhatsApp or orders can be managed from admin both option
- Comprehensive admin panel including payment gateway integration, order history tracking, product category management, and more.
- Specific features catering to restaurants (food menu creation) and wholesalers (product and minimum quantity management).
- Support for live chat, text content modifications from admin, and store address updates with opening and closing times.
- Options for delivery address input and various payment methods, including WhatsApp order alternatives.

Payment Gateway Integration:
- Stripe
- Square
- Razorpay
- PhonePe
- PayUmoney

Ideal Skills and Experience:
- Proficient in web app development with experience in creating e-commerce platforms.
- Knowledge of integrating multiple payment gateways.
- Ability to design clean, professional landing pages.
- Experience in developing systems compatible with WhatsApp.

Please note, the primary users of this web app will be e-commerce businesses, restaurants, and wholesalers.