I had this probelm, plugin simply wasn’t working. No changes.
Went to plugins page, down to Responsive Gallery Grid and clicked edit.
In the gallerygrid.php file, scrolled to the bottom on the page, and just above the last function, is 3 actions. one for removing the old gallery shortcode, one for adding the new gallery shortcode and one for adding a filter.
Turns out for some reason the remove shortcode action and add shortcode actions were commented out. Making the plugin simply not work.
All I did was remove // and bang, it worked!
I definately didnt comment it out myself so not sure what caused it. Hope this helps someone!
Great plugin by the way! The website I use it on is basically showcasing Google Business Photos Virtual Tours, so love the Google Styling!
