WordPress & WooCommerce Expert Needed for Custom Feature Integration & Fixes

I am looking for a skilled WordPress developer to handle a few specific updates and integrations on my website. Project Scope: Integrate and configure a custom payment gateway or plugin properly. Fix mobile responsiveness and layout styling issues on the checkout/cart pages. Set up a custom discount coupon field and database optimization. Ensure all security measures (such as custom login URL and spam protection) are correctly implemented. Run a quick speed and link audit to ensure everything works smoothly without any errors. Requirements: Proven experience in WordPress, WooCommerce, PHP, and CSS. Ability to deliver clean, secure, and bug-free work quickly. Good communication skills. Budget: $20 (Fixed Price) If you have hands-on experience with similar tasks, please submit your proposal with a brief example of your past work. Looking forward to working with you!