Android Question Unable to send a telegram message to a private channel

        Dim Url As String
        Dim http As OkHttpClient
        http.InitializeAcceptAll("Http")
        Dim aReq As OkHttpRequest
        Dim ChatId As String = "1234567890"
        Dim su As StringUtils
        Dim msg As String = "Hello This Is Test"
        Url = "https://api.telegram.org"
        Url = Url & "/bot....token......../sendMessage"
        Url = Url & "?chat_id=" & ChatId & "&parse_mode=HTML&text=" & "<blockquote>" & msg & "</blockquote>"
        aReq.InitializeGet(Url)
        http.Execute(aReq,1000)

public Sub SendPrivateChannelMessage(botToken As String, channelId As String, msg As String)
    Dim url As String = $"https://api.telegram.org/bot${botToken}/sendMessage"$

    Dim postData As String = $"chat_id=${channelId}&text=${EscapeMessage(msg)}"$

    Dim j As HttpJob
    j.Initialize("SendTelegram", Me)
    j.PostString(url, postData)
    j.GetRequest.SetContentType("application/x-www-form-urlencoded")
   
    Wait For (j) JobDone(j As HttpJob)
    If j.Success Then
        Log($"✅ message sent successfully. ${j.GetString} "$)
        ToastMessageShow("Message sent successfully!", True )
    Else
        Log("❌ Error sending message: " & j.ErrorMessage)
        ToastMessageShow("Failed to send message: " & j.ErrorMessage, True)
    End If
    j.Release
End Sub

private Sub EscapeMessage(msg As String) As String
    Return msg.Replace(" ", "%20").Replace("!", "%21").Replace("#", "%23").Replace("&", "%26")
End Sub