Windows forcibly updated itself yesterday and it has refused to save any password for anything since then. I have been working on this for hours and hours and I just found the solution! It's the third thing they recommend here:
https://windowsreport.com/11939-credential-manager-no-working-windows-8/ under "Change Ownership for Vault Directory."
I'm no software whiz and I could follow their steps easily. Apparently during some of these Windows updates changes are made that keep the credential manager from functioning properly. I googled "Fix Credential Manager" and I found this article. Did the first two things with no result and the third thing just worked a charm!
Ok so I just tried JerseyGirl3's suggestions above, exactly. I then turned my PC all the way off and turned it back on. The sync of passwords stayed with Google Chrome and the passwords have saved. If it lasts, then JerseyGirl3 could be a reason for me to move back to New Jersey. We might all owe her big time!