Are You converting to OneNote for Windows 10? Having trouble getting my old notebooks integrated

I have a lot of notebooks and pages from OneNote 2010. I never upgraded to 2016 (didn't want to pay for it when 2010 worked fine for me). My computer has upgraded to Windows 10, and now Microsoft has made it clear they want to go to the OneNote app for Windows 10 that can sync across devices.

However, I have not been able to get my notebooks moved over. I tried the sensible instructions at the link below:

https://www.tenforums.com/microsoft-office-365/50065-import-onenote-2010-into-windows-10-onenote.html

However, it doesn't work. I open the notebooks and OneNote for W10 crashes. Or it says, basically: We're sorry, we cannot do that right now.

I'm just not having any luck. Has anyone else tried to accomplish this and had better luck than I have?