Woocommerce/Wordpress Developer for E-commerce Store Diagnosis and Bug Fixes

I am seeking an experienced WooCommerce and WordPress developer to diagnose and resolve critical issues affecting my online fabric store, Motherland Fabrics. The website is built on WordPress with WooCommerce and Elementor Pro, hosted on Hostinger. While checkout is currently functional, the site has experienced recurring problems with checkout, Shippo integration, product pages (specifically, the 'add new product' page appearing blank), and general WordPress admin functionalities. I need a skilled professional to identify the root causes of these issues and implement lasting solutions.

Scope of Work:
- Thoroughly diagnose the product creation and WordPress admin interface issues.
- Conduct a comprehensive review of WooCommerce, Shippo, the active theme, and all installed plugins for compatibility conflicts.
- Verify the complete functionality of the checkout process, payment capture, order creation, and shipping label generation.
- Ensure a complete website backup is performed before any repairs, and all fixes are tested on a staging environment.
- Apply all verified repairs to the live production store.
- Provide a detailed written summary of the diagnosis, implemented solutions, and future recommendations.

I require a fixed-price quote for the initial diagnostic phase. Repair costs will be discussed and agreed upon separately after the diagnosis is complete. Please include examples of similar WooCommerce troubleshooting projects you have successfully completed and your estimated turnaround time for the diagnostic phase. The primary goal is to repair the existing website while preserving its current design, product catalog, and customer data.