Hi there,
thanks for pointing out the gradient issue, for some reason its not loading the additional Global Colors, we’ll get that fixed.
If you want you can go to Customizer > Colors and in the Global Color Pallet add the following colors:
accent-2 #ff6900
accent-3 #92a332
accent-4 #ebeffa
accent-5 #d29698
accent-6 #151bd5
For the navigation its because:
1. The Customizer > Layout > Off Canvas Panel is enabled for Desktop and Mobile.
2. There is a menu located on the Off Canvas.
3. The important part…. there is a Blank Menu assigned to the Primary Navigation.