I already updated Firnera few days ago, and now there is an update in Firnera v.1.1.0. Please check the product that you have purchased!
Do not hesitate to ask back in.
It looks like you have not read the theme documentation that has been provided, the number 8. shortcodes.
Please create a new page with the title Sitemap, then paste it in visual shortcodes editor pages:
Please ask again if there are difficulties. Thanks for your purchase my products.