Ciao,

Somebody overriden Animated Number addon in your template, probably that causes the problem. Make backup of that folder on your laptop, and delete folder on www, then check again.

Hello, as I said I made some changes, I created the folder to avoid overwriting the changes during updates. I wanted to understand why I can't make changes on the frontend side.

Thanks Matteo

You done correct, but maybe you made mistake in your override file? Missing tag, wrong mark?

Enable Showing Errors to MAXIUM in Global Configuration to check which line makes problems.

Custom code is on your hands.