Hello,
1) About the redirect to the Home page from – http://www.bazz.digita.org/negozi-partner/
I’ve asked to check how it works with the default theme to find out if this situation is caused by our theme, or there is something server-side or 3rd party plugins caused this unexpected behavior.
As I can see, there is no redirect anymore – https://gyazo.com/ec5538149d5bc9bc80822c146b49e371 Have you sorted out?
2) Mentioned filters can’t be imported together with the demo content.
Vendor list filter http://prntscr.com/10wz4gg comes from WC Marketplace, in your case, other filters of the Dokan plugin are available. Go to Appearance > Widgets, add widgets into Shop sidebar area. More information you can find in the documentation of the Dokan plugin.
Regards