Error Connecting to SSL - Delphi 7 Indy 9 - delphi

Question

I'm trying to POST to a https Web service from Delphi 7. Initially the error was "Unable to Load SSL library". So placed ssleay32.dll & libeay32.dll (from indy_openssl096k.zip in https://indy.fulgan.com/SSL/Archive/) in the folder containing my executable.
Now the error is "Error connecting to SSL". In the exception, I also used WhichFailedToLoad() function and below is also reported
"Failed To Load: EVP_md5 X509_digest X509_NAME_hash"
From different sites, I could understand, above functions is part of libeay32.dll. But why is this still reported as FailedToLoad ?
I saw suggestions that updating to Indy10 ca solve this. But the applications I'm working on uses Indy functions on large number of modules and I don't want to cause any issues if Indy update fails. Is there anyway to resolve this error with Indy9. Any help is greatly appreciated.
I have been trying to find out a solution for the past few days and can't get one. Could someone kindly help me please ?
My Code
Protocol := TIdHTTP.Create(nil);
try
jsonToSend := TStringList.create;
Id_HandlerSocket := TIdSSLIOHandlerSocket.create(nil);
Id_HandlerSocket.SSLOptions.Method := sslvTLSv1;
Id_HandlerSocket.SSLOptions.Mode := sslmClient;
Id_HandlerSocket.SSLOptions.VerifyMode := [];
Id_HandlerSocket.SSLOptions.VerifyDepth := 0;
try
jsonToSend.Add('{"Branch":"' + branch + '", "Country":"' + country + '"}');
Protocol.IOHandler := Id_HandlerSocket;
Protocol.Request.ContentType := 'application/json';
Protocol.Request.Accept := '*/*';
Protocol.Post(ServerURL,jsonToSend);
except
on E:EIdOSSLConnectError do
begin
showmessage(E.Message);
showmessage('Failed to Load: ' + IdSSLOpenSSLHeaders.WhichFailedToLoad);
end;
end;
finally
Protocol.Destroy;
Id_HandlerSocket.Free;
jsonToSend.Destroy;
end;