Refinement of the WordPress theme and integration with the payment system via API

Need to refine the Workreap theme for WordPress

List of required improvements:

Integration with impay payment system via api. Changing the logic of calculations, the formation of payment forms by API. Holding, payments, checks. Creation of a system for monitoring and tracking the time of transactions based on the tools built into the theme. Change the logic of creating, completing, canceling trades in the Workreap theme. Minor improvements to the built-in chat and the appearance of the theme.Detailed TK is available. The amount is discussed with the interested performer.