Can't find the .html file in dle?

Question

HTML

Hello, there is a file on the site at example.ru/pay/success.html
There, at this address, this is what is located prntscr.com/dyd97a , it redirects people to success.html after a successful payment, money is received in robocas but not credited to the site , the problem is in the code, where can I find the controller in dle that is responsible for the appearance of success.html or is it not so arranged in dle?

Answer 1

it is generated, in fact there are tpl which is converted to html

Answer 2

In URL enter example.ru/pay/success.php
In DevTools tab Sources