[Theme: Calotropis] More than 10 thumbnails on home page?

Hello. I have Calotropis set up to display excerpts in 4 columns on the front page. After the larger, most recent post at the top, a maximum of 10 posts will show. 10 is an awkward number, as it only half fills the bottom row. I’m not sure where the limitation is coming from.

I have a plugin that lets me hide individual posts from the front page, so each time I have a new post, I go hide the 10th oldest post to keep the rows even (1 at the top + 8 excerpts/thumbnails remain).

Is there a hidden setting somewhere that would allow me to show the most recent post (at the top) plus 12 or 16 more excerpts? Some multiple of 4 anyway, so that the rows remain even.

https://www.absurdreviews.com/

Thank you.

https://www.ads-software.com/extend/themes/calotropis/