unable to signin via remote authentication when using an aspx page

Dear community,

I have transformed the signin.jsp ( https://www.zoho.com/support/help/images/signin.jsp) into an .aspx file.

Unfortunately I did not manage to get to my requests because I receive the following error message:

{"result":"failure","cause":"E105 - Request Delayed"}

Did any of you experienced this? and Did you found a way to solve the problem?

Thanks in advance.

Regards,

Laci

P.S. Looking at other related posts I saw that people had doubts if they used the right way of computing the md5 hash, and I have to admit I share their concerns, therefore I list here what I used to calculate the apikey and perform the redirection:

string source = operation+email+remoteauthkey+ts;

using (MD5 md5Hash = MD5.Create())

{

string apikey = GetMd5Hash(md5Hash, source);

string redirectURL = "http://support.mycompany.com/support/RemoteAuth?operation="+Server.UrlEncode(operation)+"&email="+Server.UrlEncode(email)+"&ts="+Server.UrlEncode(ts)+"&apikey="+apikey;

Response.Redirect(redirectURL);

base.OnLoad(e);

}

Is this the right way? If yes, than why do I get the Request Delayed error message?