commerce is booming. For developed countries, buying something on the Internet has become a familiar and commonplace. In our country, the number of business units that sell their products via the Internet is also constantly growing. To ensure that the entire purchase process takes place online, is convenient and takes place in a few clicks, there are electronic payment payment gateway for selling products (https://payadmit.com/features/sell-digital-products/). This is an excellent tool that helps to make the payment processing process really comfortable for the user, and the merchant to quickly receive funds to his current account.