Well, I just discovered that I cannot upgrade to the latest version.
In setting up my current laptop, I was running as a member of the Administrators group so I could install the software I needed. Corporate policy says no one runs as Admin for their day-to-day work, so I took my own Admin privileges away and there's a second Admin account for those rare occasions I need to elevate my privs.
So, then I hit "Check for Updates" it failed - as I expect. I typed "Evernote" into the Windows 10 search box, right-clicked, and said "Run as Administrator." Evernote still ran as me and the update failed.
I logged into the Admin account to run the update and it worked until it insisted that I register. But, I don't want to register that account, it's the Admin user, not my day-to-day user. There's no way past the mandatory registration screen.
Long story short, I can't install the update as a normal user (expected) or as an Admin because of the mandatory registration.
Other than having Evernote fix their screwed up installation (and experience here says that's unlikely,) any suggestions for getting the latest version installed so I can have a semi-working Spell-Check?