Hi,
Hope you are doing great !
I have understand your expectations, that
-you wish to convert payment method Paypal to credit card payments on existing WP website in short,you need to integrate credit card payments on existing site with its current payment platform
Please share the URL/ FTP / WP-access of your existing website and initiate an interview on freelancer/skype for detailed job requirements.I can assure you that I am enough capable to deliver you the successful job, exactly as per job requirements and as I worked on similar projects integrating API.
please go thorough following websites using API
1. [login to view URL] integrated Amazon/eBay API
2. [login to view URL] Integrated PayPal Split Payments script & AWS S3 Amazon Cloud Storage script
Further, I have more than 4 years of experience in PHP/MySQL based Web Designing and Development including Integrating 3rd party APIs like Payment Gateways (PayPal, [login to view URL], etc.), Shipping Modules (UPS, FedEx, USPS, DHL, etc.), Aweber, aMember, MailChimp, GoogleMap, Google Analytics, and Social Media API, etc.
Looking forward to answer your queries and concerns perhaps to discuss the project with you on PMB
Warm Regards,
Arun