Shopify Header Bug Fix

My Shopify store’s header has broken on both desktop and mobile, and sales are at risk until it’s fixed. I don’t yet know whether the fault sits in Liquid, CSS, JavaScript, or some combination, only that customers can’t reliably use the navigation and the layout looks wrong. I’m ready to hire within the next 30–60 minutes and need the repair completed ASAP.

Here’s what I need from you right away:

• Jump into the live (or safely duplicated) theme, trace the root cause, and apply a clean code correction.
• Restore the original header design and full link/button functionality across all major browsers and mobile devices.
• Hand me a short changelog so I can track what was modified.

Acceptance criteria: header displays correctly, every nav element works, no new console errors appear, and site speed stays steady.

If you’re confident with Shopify Liquid plus front-end debugging and you can start immediately, message me with a quick note on your approach and an estimated time to resolution.