Hello, @Alessandro,
For the store notice simply go to the Dashboard >> XStore >> Theme Settings >> Theme Custom CSS and then paste the below code to the Global CSS Section.
.demo_store{position:relative !important;}
Then save settings and check back to your site after clearing the browser cache.
Regarding the last menu item issue the thing in the previous message I share a code with you to set some space from the top of the menu that’s why the last menu item appears like this you can remove that code and set the menu at the position it was before to show the last menu item as you want. Below is the code I am referring to.
#header-vertical .et_b_header-menu li>.nav-sublist-dropdown:not(.nav-sublist){top:10% !important;}
Regards 8Theme Team.