Hi
You can chose for your logo to appear in the sticky menu https://docs.generatepress.com/article/navigation-logo/ ( Chose the first choice )
This will make the logo also appear on your mobile sticky navigation so you can do either of this:
1. Hide the logo on mobile sticky navigation with css
2. Use mobile header. And this is the better option in my opinion because your mobile sticky navigation is taking too much space, and space is very valuable on mobile screens. https://docs.generatepress.com/article/mobile-header/
Please post back when you have done the above for further assistance.