WordPress Login/Register Integration

My WordPress site needs a clean, secure authentication flow. The requirement is an email-and-password based system that lets new visitors register, confirms them as “Subscriber” users, and then log in through a styled form that matches the current theme... (Budget: ₹600 - ₹1500 INR, Jobs: CSS, Database Management, HTML, JavaScript, PHP, Security, Web Design, Web Development, WordPress, WordPress Plugin)