Yes I understand, and as You mentioned, I have made http GET request with scraped cookies, website responds properly, the only thing is that it doesn't use keep-alive to maintain connection as browser requests do. In traffic monitor there are only two differences in reqest headers described before (Host header and headers order) I attached screenshot of those request from traffic monitor, also content policy in browser was configured so that only same single request was made from browser.
Therefore, is this possible to made request using GET/POST action or C# code action to use properly keep-alive header? Of course, I'm aware, if this is difficult and require some work to make it functioning, I would order it in the marketplace and pay for it.