WHMCS Payment Gateway Installation

Good day, I am looking for someone to install a payment gateway for me into my WHMCS. The appendix contains information to payment gateway. Payment Gateway that requires 4 URLs. Example: ----------- Good Day, In order to make the connection please send us the 4 urls (Payment page, Success page, Error page, Cancel page) mentioned to the manual. The urls can be like, for example, Payment page: [login to view URL] Success page: [login to view URL] Etc. I remain in your disposal for any clarification. ----------- I need someone that knows it and works professionally. The whole has to happen as quickly as possible. Please apply only if they can also 100%. Best regards PPPLY