Since upgrade to V8 Mac master password not working

@peteb I'm really sorry to hear that you're struggling to unlock 1Password. Let me see if I can help.

First of all, could you confirm that you have an active 1Password subscription? 1Password 8 is only available via a subscription, so any local vaults you might've had in 1Password 7 need to be transferred manually before they can be accessed.

Next, could you try the following steps and see if they make a difference?

1. If you recently changed your account's password, can you try entering your old password once to see if that works? If it ends up working, your account should begin unlocking using the new password from then on.
2. If that doesn't work, we can try resetting your application (this will not delete any of your 1Password data):
   • Fully quit 1Password. You can do this by clicking on the 1Password icon in the top right side of your menu bar, and pressing Quit. Just closing the 1Password window or selecting Quit in the 1Password menu will only hide the app;
   • Open Finder, then in the top menu click Go > Go to Folder...;
   • In the window that shows up, enter the following, then press Enter: ~/Library/Group Containers/2BUA8C4S2C.com.1password/Library/Application Support/1Password/Data;
   • You should see the Data folder. Rename it to Data Old or something similar;
   • Restart 1Password. You should be asked to sign in;
   • Sign in using your account details, then see if it begins working once again.

I really hope this helps. For more personalized help I recommend that you reach out to support@1password.com. They'll be able to diagnose potential issues related to your account specifically.

Cheers,
Gabriele