What should I do if I forget my Vault Password?

On the Vault lock screen, tap "Forgot Password?" to begin the recovery process.
Enter your backed-up Recovery Key.
Once verified, set a new Vault Password.
Use the new password to unlock and access your Vault.
Note: if you have lost both your Vault Password and your Recovery Key, this recovery process cannot help. The only remaining option is to Reset Vault — which permanently deletes all files inside.