Diagnose & Fix WordPress Functionality

My WordPress site suddenly developed functionality problems—pages behave unpredictably and some features that worked yesterday no longer respond. I can’t tell whether the root cause sits on the server side (configuration, PHP version, memory limits) or inside WordPress itself (core files, theme, plugin conflicts). What I need from you is a thorough, methodical investigation followed by a clean fix that brings everything back to stable operation. Scope of work 1. Replicate the malfunction, document the error logs, and pinpoint whether the issue stems from the host environment or WordPress. 2. Apply corrective action: this could involve server-level tuning, repairing corrupted core files, disabling or updating plugins/themes, or rewriting problem code. 3. Test the entire site after the repair to confirm all previously broken functionality works smoothly on desktop and mobile. 4. Provide a brief hand-off report that explains the root cause, the exact steps you performed, and any preventative measures I should keep in mind. Please bring solid experience with WordPress core debugging, plugin conflict resolution, PHP error tracking, and hosting stacks (Apache/Nginx, MySQL). If you can start right away and keep downtime to a minimum, I’d appreciate it.

Project ID: 40395911