Reply To: HTML Block to shop page

Hello,
It works. But i need your advise.
When i place my HTML shortcode inside this file, it appears on the website as text [html_block id="1848"]
Could you please help me?

Also i found it better to use categories and subcategories descriptions. But i couldnt do that its descriprions appears at the bottom of shop content. It appears only between shop and header
Could you please advise how to do it?

And i am newbie in website building. Tell me please can i use your theme at my second website or i have to buy another one license?
Thank you in advance