Shopify Maintenance & Feature Fixes

My store is live on Shopify but a few core features still need polish to keep sales flowing smoothly. The priority is functional work—no major theme redesigns are required right now (https://littlepinkllama.com/).

1. Functional improvements
• Checkout process – streamline the flow so customers reach payment with fewer clicks, and confirm that discount codes and multiple payment gateways behave consistently. (Put "Buy now" everywhere)

2. Bug fixes
• Customer details should auto-populate from cookies when a returning shopper reaches checkout.
• About Us: Page is not mobile friendly need to work on that
• Subscribe to News letter - How can person entering the website, subscribe us by default so that promotion email or other notifications can be mailed to him.
• Button across site should be changes, it should look more real like a clickable button, Button modification.
• Collection page need to look better.

3. Create flows:
- Abondone checkout, Store owner should get an email (Will provide all emails who will get the details)
- Customer payment failed , Store owner should get an email (Will provide all emails who will get the details)
- Customer visited but left in between, Store owner should get an email (Will provide all emails who will get the details)

All code changes must be implemented in a way that survives future Shopify theme updates, so please comment your edits clearly or use Shopify’s recommended sections/snippets approach. Once complete, test across Chrome, Safari, Firefox, and mobile browsers, and supply a short changelog noting every file touched.

Completion is approved once I can run through a full purchase, search for multiple products, and browse the site without the issues above reappearing.