My OpenCart store at www.tomyurasitsproductions.com/store/ has suddenly lost several core features. The checkout process stalls before payment, product listings either fail to appear or show blank pages, and customers can no longer log in. No major theme or extension changes were made right before this happened, so I need a seasoned OpenCart/PHP developer to pinpoint the root cause and restore full functionality. Here’s what I need from you: • Diagnose and repair the checkout workflow so a customer can add to cart, proceed to payment, and receive order confirmation without errors. • Restore product listing visibility, including category pages and individual product detail pages. • Re-enable user login/registration and confirm sessions persist correctly. Please perform the fixes on a staging copy first, then migrate to the live store once everything passes testing. I’ll provide cPanel, FTP, and admin credentials after we agree on the scope and timeline. If you spot extension conflicts, outdated modules, or database issues, document them and outline the steps you took to resolve each one so I can keep the store stable going forward. When you reply, let me know roughly how long the initial diagnostics will take and what information you need from my end to get started.