Not being able to open 2024 now is a different problem than Windows 10. That is something else, maybe to do with your computer. Some people are having trouble after updating. We don't know why yet.
In the Desktop program, you may need to sign in to your online account. Go up to FILE and at the bottom it will say if you are signed in or not. If you are signed out, it will say Sign in under File. If you are signed in it will say Signed in as [name] under File.
You may get different layouts if you are signed in or out. Like especially when you use the Search function.
