WordPress PayPal Pro Integration I need PayPal Pro woven directly into my current WordPress site so visitors can complete payments without ever leaving the domain. The site is already live and stable; I simply want the checkout flow to hand off card details to PayPal Pro behind the scenes and return clear success or failure responses back to WordPress. My PayPal Pro merchant account is active, so the job starts with credential configuration and finishes when a real-world transaction posts correctly to both PayPal and my own order system. I’m still weighing whether to run everything through a sandbox first, so I’ll lean on your advice there—if it speeds up quality assurance, set it up; if live credentials with tight error logging is safer, explain why. Deliverables expected: • Fully functional PayPal Pro integration embedded in the existing checkout page • Secure handling of all API calls, errors, and callbacks • A quick walkthrough (or short read-me) showing where to update credentials and toggle between sandbox and live modes Everything must fit cleanly into my current WordPress stack and leave the theme, plugins, and user experience intact.