Hello,
Thanks for contacting us.
Please post different questions via separate topics.
1/ Sorry, but your request is a bit unclear to me.
We do not give a guaranty for full theme compatibility with all existing 3rd party plugins. Sometimes, not always, you need additionally customize the theme or plugin to make them work together. Unfortunately, it’s not possible for the author to make the theme compatible with all the existing plugins and additional customization is outside the scope of our support.
2/ Theme options > Header Builder > Cart > Number Of Products In Mini-Cart
3/ Theme options > Header Builder > Main menu > Computed Box For The Menu Item > set 40px padding top and bottom.
Regards