Logo can be set in Header – Logo sections of 5th Avenue options panel
Our theme comes with up to 3 different logos. Each logo has a retina version. Make sure to add retina (2x bigger) version of your logo. If you want to use the same size of the logo for retina then you need to upload it for retina anyway.
The first logo is your main logo. The other two logos are optional.
White logo used when you enable white style header option in Customizer or Page metabox.
Altrenative logo can be enabled for mobile or sticky header.
Favicon can be set in Appearance – Customize – Site Identity section