Setting up a payment acceptance system on the site

Hello, you need help in setting up payments webmoney, yandex, qiwi, in the store script only yandex is connected through the application but still can not check whether payment for the goods has passed, perhaps out of date requests to payment systems, in general you need to set up payment and check that everything works store order and payment for goods. You also need to check the script of the shopping statistics on the main and in the panel if everything works.
Webmoney payment.