Tiled Mosaic Not working

What mozaic are you talking about ?
In pinboard theme, this one on home page with stairs, galaxy and flower ?

Jetpack perhaps ?

Yeah the Jetpack gallery option “Tiled Mosaic” that allows you to change the layout of galleries to look like a magazine mosaic.

It seems to be a wordpress feature, no ?
https://en.support.wordpress.com/images/gallery/
but i don’t use jetpack so i can’t help you

Pinboard theme
== Changelog ==

= 1.0.8 =

* Replaced masonry() selector with .hentry to match all post types
* Removed styling of <ins> tag for better compatibility with Google AdSense
* Using core bundled jQuery Migrate
* Allow use of Jetpack Tiled Galleries Module
* Allow use of the > sign in custom CSS
* Fixed document title bug on blog pages with static front page
* Fixed navicon displaying out of context on mobile
* Fixed search form overlapping navigation on mobile
* Fixed slider controls overlapping navigation on mobile
* Fixed uncleared floats on static front page with full width layout

———————-
Update !
update !

I did the update and I am trying to customize it, but for some reason it does not allow me to update the rows. I would like it to fill the page, say 5 rows. I add rows in text and nothing changes. I only get two pictures per row. I used rows and columns. Neither work. Any idea why?

I updated the theme and corrected the width to 800px in the functions.php file. It looks great and is functioning perfect! Thanks Daniel for the update your theme is awesome!

I changed this
if( ! isset( $content_width ) ) $content_width = 660;

To This
if( ! isset( $content_width ) ) $content_width = 900;