Unfortunately, if you don't remember the password, you can't open the program. In order to fix the issue, check your email inbox to see whether you have an email with the password received from the developer of Photo Vault or not. If you can't find the email, type a wrong password several times and when you will be asked to recover your password, select Yes, and follow the on-screen instructions. If it doesn't help, try removing the program and then installing it again.
