Because you’re using a theme that’s not on thw wordpress.org repository, please use their official support channel. We feel they are best equipped to support their products.
First get into your browser’s browser inspector and look into your footer section.
You will find a widget area which will be easy to customise.
You will also find a “class-info” classed div that has your homepage link and an empty link too.
If you create a child theme you will be able to customise the footer section.
On the other hand you could seek support from the theme authors.
Thanks – will check out the official support channel