Banner just in main page

HI!
I have been using this theme for several months and I added a banner (image) in my main page. Today I have noticed that this banner has appeared in all pages!! Not only in the main/landing page.
I remember there existed an option to show or hide widgets depending on the page, but today I can not find the way to do this. Any help??

Thanks in advance.

P.D. My website is https://www.puedoayudarte.es, but I completely deleted the banner because I couldn’t fix the problem.