Grid setting per product is not working

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Grid setting per product is not working

Hello everyone this is my first post, I hope this message finds you well.

I am working with one free theme and when I try to customize the "collection page" with the online editor and change the number of products per row nothing happens, the grid is not making changes in our screen, I mean, it is possible to change this option from 2 to 5 products but the grid shows any number and on my screen is still appearing 3 products. Someone please can tell me if I am doing something wrong.

I add one picture about the customize, also in one TXT file the code of this section.

GRID error.PNG

Thanks, community