Integration of the payment system website on Wordpress

It is necessary to implement such a case: a client comes to the site enters your ID , the system checks whether the database (the database analyst is which if that helps) so the customer and gives you the opportunity to pay by card, and makes a note in the basis of which the amount was paid successfully not successfully according to the documentation:

https://docs.cityhub.com.ua/methods.html

Advice guys the payment system will have a chat cables .

To work offer pay-per-hour.