How do I set up my short URL for my calendar? I followed the steps and it doesn't work

When setting up your short URL, make sure that there is a unique set of letters at the end of the URL that was generated. If the link doesn't work, go back to that step and wait longer for the system to generate the short URL.  

Sometimes the button for the URL will appear before it is finished. Simply wait until both the countdown is finished and the button has appeared.