right side bar

hello imon
1) im having a problem with the right sidebar.
if i go through the customizer it is not displaying the option for right sidebar.
if i go through the widget section, it is displaying the right side bar, but if i place the plugins in it, nothing is showing up on my website.
my website is https://www.rotorznmotorz.com

2) is there an option to insert call to action button inside the header, below the menu?

plz help. thank you.