Digital Product E-Commerce Website

I’m preparing to launch an online store that sells only digital products—think downloadable files, licences, and similar items—and I need a complete e-commerce website built from scratch. The core flow must allow visitors to browse products, create a user account, pay securely, then instantly access their download from their personal dashboard.

Key points to cover
• User account system: new customers register or sign in with social or email, then manage past purchases and re-downloads from their profile.
• Digital-only catalogue: no shipping, taxes, or inventory modules for physical goods—keep it streamlined for files.
• Secure checkout & payment gateway (Stripe, PayPal, or comparable).
• Automatic licence or file delivery on successful payment, with unique, expiring download links.
• Responsive layout and clean UI that can be re-skinned easily.
• Admin back-office to upload products, set pricing, view orders, and manually resend download links if needed.

Acceptance criteria
1. I can upload a ZIP or PDF in the admin, set price, and see it live in the catalogue within two clicks.
2. A test user can register, purchase with a sandbox gateway, and immediately see a working download link in their dashboard and e-mail receipt.
3. Site passes basic OWASP security checks; all downloads are protected behind authentication.
4. Full hand-over includes a brief video or written guide explaining product upload, order management, and user support tasks.

I’m flexible on platform—WooCommerce, Shopify (digital plan), or a custom Laravel/React build are all fine as long as they meet the criteria and are scalable. Please tell me which stack you’d choose and any notable plugins or libraries you’d rely on so I understand long-term maintenance needs before we start.