Hi Patricia,
If you don’t need animation during the transition between the primary navigation to sticky navigation, then I would suggest disable the sticky navigation option, but use CSS instead.
You are using navigation as header option, try disabling that option as well, set navigation location to below header.
You should be able to align the header and primary navigation individually in customizer.
Once it’s done, we can help with custom CSS to make the header and primary navigation sticky.
Let me know ๐