The theme https://developers.oxwall.com/store/item/1435
is by OW Visuals, who updated it on May 21, 2020, so he is not an author who has left OxWall or is an old unsupported theme.
I think you should send a private message to the author, or open a topic in the theme's forum (with this last one you get a notification)
To help you, you'll need to ask more specific questions, with screenshots, drawings or something. "add information" can be windows with links, ads, articles, pages created by you or many things and you don't explain much about it.