My Shopify store is suffering from a series of problems that are starting to hurt sales, and I need an experienced developer to step in quickly. At the moment I’m seeing failed or stalled payments, sluggish page-load times and product pages that occasionally break layout or return errors. The issues surface across every major touchpoint of the site, including: • Checkout process • Navigation menu • Inventory management Your job is to diagnose the root causes—whether they live in the theme code, a third-party app, or a deeper configuration setting—and then implement clean, sustainable fixes. I’ll rely on you to • restore flawless payment processing, • boost load speed to industry benchmarks, and • ensure product information renders perfectly on every device. Please be comfortable working in the Shopify Theme Editor, Liquid, JavaScript, and any performance-monitoring tools you prefer. I’ll provide theme access, app list, and a staging copy so you can test without disrupting live orders. Once resolved, a brief hand-off document outlining changes and any maintenance tips will close the project. If you have tackled a similar multi-layered repair before, I’d love to see an example or hear the approach you took.