Why New Notebook and Options feature greyed out and not available in OneNote?

Question:

Why are the "New" and "Options" in my OneNote 2024 (Office Home 2024) grayed out, unavailable, and unclickable?
Can't even create a new notebook.

Related Documents

• Why are the Horizontal Tab Layout Options in the OneNote 2021 Options Window Grayed Out and Unavailable?
• EXE: OneNote cannot create a new notebook at: Possible reasons include: