Hello Cem Bagdatli ,

Seems like problem with Server Url or with Port which is used for Jot Server. Please be sure that the port is opened, you may check it using windows command line or putty client.

You need type command format:

telnet 

example:

telnet hekim.net 5000

The successful connection (port is opened) you will see blinking cursor on a blank screen.  If the connection fails, troubleshoot the failed connection.