Youtube Livestream Api LiveChatMessages List - youtube-api

Question

Im trying to get the Messages from a Youtube Livestream, works, but i dont get new Messages. The NextPageToken is included.
Sometimes i get new messages, but it takes arround 5-10min.
Youtube Chat Sending works also fine.
Any Idea?
This is from the Docs: https://developers.google.com/youtube/v3/live/docs/liveChatMessages/list
private async Task GetMessagesAsync(string liveChatId, string nextPageToken, long? pollingIntervalMillis)
{
liveChatId = "EiEKGFVDVUQ3WGNXTk92SlpvaHFMM3dZTi1uZxIFL2xpdmU";
if (!updatingChat)
{
if (!string.IsNullOrEmpty(liveChatId))
{
newMessages = true;
var chatMessages = youTubeService.LiveChatMessages.List(liveChatId, "id,snippet,authorDetails");
var chatResponse = await chatMessages.ExecuteAsync();
PageInfo pageInfo = chatResponse.PageInfo;
newMessages = false;
if (pageInfo.TotalResults.HasValue)
{
if (!prevCount.Equals(pageInfo.TotalResults.Value))
{
prevCount = pageInfo.TotalResults.Value;
newMessages = true;
}
}
if (newMessages)
{
Messages = new List<YouTubeMessage>();
foreach (var chatMessage in chatResponse.Items)
{
string messageId = chatMessage.Id;
string displayName = chatMessage.AuthorDetails.DisplayName;
string displayMessage = chatMessage.Snippet.DisplayMessage;
string NextPagetoken = chatResponse.NextPageToken;
YouTubeMessage message = new YouTubeMessage(messageId, displayName, displayMessage);
if (!Messages.Contains(message))
{
Messages.Add(message);
string output = "[" + displayName + "]: " + displayMessage;
Console.WriteLine(time + output);
}
}
}
await GetMessagesAsync(liveChatId, chatResponse.NextPageToken, chatResponse.PollingIntervalMillis);
}
}
updatingChat = false;
await Task.Delay(100);
}
public async Task YouTubeChatSend(string message)
{
try
{
LiveChatMessage liveMessage = new LiveChatMessage();
liveMessage.Snippet = new LiveChatMessageSnippet()
{
LiveChatId = "EiEKGFVDVUQ3WGNXTk92SlpvaHFMM3dZTi1uZxIFL2xpdmU",
Type = "textMessageEvent",
TextMessageDetails = new LiveChatTextMessageDetails() { MessageText = message }
};
var insert = this.youTubeService.LiveChatMessages.Insert(liveMessage, "snippet");
var response = await insert.ExecuteAsync();
if (response != null)
{
}
}
catch
{
Console.WriteLine("Failed to chat send");
}
}