Gallery mosaic

Hi, I tried to do what you told me about the photos and remove the slide below, and it still doesn't work for me.
I think that for whatever reason that module is already damaged, and I want to ask you a question, is there a way to import it from the original template or reset the one I already have, so that it remains as it was at the beginning?
Thank you very much.

Hello,
you need to install the complete Joomla with our quickstart.
An import is not possible