❔ HTTPclient fails to POST properly

curl1 -vv -X POST -H "Content-Type: application/x-www-form-urlencoded" -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36" -H "Referer: https://www.website.com/session/login" --cookie "PHPSESSID=ehoj1hg8daist388b72k8c2roe" -d "OWhVNUhsOE5ZS2ZIc1hWdWtiZ05pUT09=ZFoyZjBjeWJzTWJMdjkwQWVndlQyUT09&email=my%40mail.com&password=12345" -o N:/login.html https://www.website.com/session/login

const string baseURL = @"https://www.website.com";
HttpClient client = new HttpClient();
client.Timeout = new TimeSpan(0, 0, 30);
client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36");
//---
// Parsing CRSF tokens and PHPSESSID from first pass
//---
client.DefaultRequestHeaders.Add("Cookie", phpSession);
var credentials = new FormUrlEncodedContent(new[]
{
    new KeyValuePair<string,string>(match.Groups[1].Value, match.Groups[2].Value),
    new KeyValuePair<string,string>("email", "my@mail.com"),
    new KeyValuePair<string,string>("password", "12345"),
});
var req = new HttpRequestMessage(HttpMethod.Post, $"{baseURL}/session/login") { Content = credentials };