Hello,
1, 3. Theme Options > Breadcrumbs > Breadcrumbs font > set 0px and “Breadcrumbs title font” set appropriate to your needs.
I would recommend you to disable Header overlap in Theme options and enable it only on pages where it is required (via [8theme] Layout options), like your home page.
Also, disable “Smart menu” in Theme Options > Menu.
2. Please create Wishlist page and set it here – https://prnt.sc/lirwee
Regards