WordPress Theme Purchase Verification Integration

I'm looking for a WordPress developer to integrate a manual code entry purchase verification system into my theme. The purpose of this system is to enhance the security and exclusivity of my theme. I've attached the screenshot below, where you'll be able to see all the details of the purchase verification. Key Requirements: - Implement a system where users must manually enter a purchase code to gain access to the theme's features. - If a user enters an invalid purchase code, their access should be blocked completely. Ideal Skills: - Proficient in WordPress theme development and customization. - Experience with implementing purchase verification systems. Please note, this project requires attention to detail and a commitment to creating a seamless user experience.