The option ‘Logo icon’ has disappeared in my customizers menu. Please see a picture of how it should look like. https://wpexplorer-themes.com/total/wp-content/uploads/sites/2/2017/06/total-header-logo-icon.png
Thanks for any help!
For any technical query about theme functionality the best choice will be contact theme Author and let them know How to Contact your purchased theme Author, theme author will be happy to answer your query. Also you can check theme documentation.