@bokow - First, please go edit your post with the config.js content and add the three back-ticks before the first line of the code and after the last line. That’s the markdown feature I was talking about.
Second, you will have to find the URL for your calendar in .ics format. Depending on what provider you are using, there will be different instructions on how to find it. A search for “export my calendar to ICS format” will get you pointed in the right direction.