The problem is simply this. The OneNote Clipper works fine with a personal account but does not work with a business account. I can log out of a personal account and log in to a business account. The available notebooks do not change.
What is particularly disconcerting is that https://www.onenote.com lets me logon with my business account credentials, but then shows 'My Notebooks' as those under the personal account, but many 'Recent notebooks' are SharePoint hosted notebooks only available through the business account. I have concerns both from a practical point of view and from a security perspective. What is going on?