is not responsive to smartphones and tablets

Hello, I purchased and downloaded the updated version.
How can I do now to install it without losing the changes that I made previously to temlate?
Thanks.
www.donaticaffe.it/donaticaffe

What changes did you had? - What files

I had to fix parts based on your suggestions that you can find in the topic:
- Modules of 1-2-3 alignment advert
- Error with Hot Effects Rotator25
- Do not load pages
if I try to reinstall the template tells me that already exists and can not continue.

Ok, do you know where exactly are all changes whiting the template directory (modules are not important)?

If you know that you can replace template files, and then return fixes as needed.

I upgraded but not slidershow sizing the video of the smartphone and remains great.
can you solve?
thanks

How this should work?