Issues with the theme

Hello,

I tried to add currency switcher But I am unable to add as the currency switcher is not working so i removed the shortcode now I am unable to find the currency switcher. when I switch currency to GBP still seeing $ to be there when I place short code for currency switcher the shortcode was showing as hard text so I removed and now I am unable to get short code for currency switcher.

When I try to add banner on blog and selecting full width page the full width is not working sidebar is coming on every page so i tied to do display none by adding page id's you can review css added