There is no way to recover the master password if you forget it. The only way to continuing using the software is resetting the application, which means you will lose all existing data. It’s sad, but that’s the tradeoff we have to make in order to make sure your data is fully secure, otherwise, anyone can recover the data without knowing the master password.
To reset the application, you need to navigate to the location of your data file in Finder:
1. From Finder menu, choose Go -> Go to Folder …, then copy and paste the following path to the popup dialog and press Return:
2. You should find a file called keys.sqlite and just remove it.
3. Restart Keys.