I tried the keychain fixes that worked for others, but they didn't work for me. This is what finally worked:
when it asks for a keychain password, enter your computer screensaver or login password and click "always allow". Do not just enter! The important points:
1.it's asking for your Mac login that you use to unlock screen.
2. try different attempts with "always allow". I'm not sure what finally worked, bc I tried so many times. LOL
Hope this helps. Sad that TT staff don't answer these desperate requests for help.
