SImilar issues, but with a Google sign in on IOS and Windows. Notes syncing starts but is not successful since +- 10 AM CET, 25/Oct.
Also since last "upgrade" functional issues:
1) Sync of password protected web pages has partial results, content is as if I was not logged in.
2) Note title of section clips is not filled in any more.
3) Full web page clip includes large nearly empty section (just a few sharing icons) in the beginning after a red + sign
I hope indeed this 'upgrade' is backed out..