Hello, @stefano.zinnanti@outlook.com,
1. In order to solve your issue please go to XStore >> Dashboard >> Sale Booster >> and there disable Fake Sale Popup and Request Quote. See the images for a better reference:
https://postimg.cc/FdcrwJMP
https://postimg.cc/GHbLStqQ
2. In order to solve your issue please go to Dashboard >> XStore >> Theme Settings >> Footer >> Back to top button and there disable the options as per your needs: See the image for a better reference: https://postimg.cc/2q09mcDy
Regards 8Themes Team.