Are you referring to Block Patterns right?
https://developer.wordpress.org/block-editor/reference-guides/block-api/block-patterns/
Could please check if your pattern is also ‘Published’:
Thanks for your reply, yes I’m referring to the Block Patterns, I’m not sure where to check if is published on not, but still doing experiment using the default twentytwentytwo theme and trying to add some classes on the divs, but its not taking any effect unless deleting the pattern, save the page and recreate it
