If you have forgotten your master password, it is no longer possible to open your database. Due to the AES 256 bit encryption of the databases by Password Depot, it is technically impossible to open the file without entering the correct master password. We have also as a manufacturer in this case no possibility to help you!
You can only try to enter different master passwords and try to guess the password.
HINT: If you have forgotten your master password, this does not mean that you can no longer use Password Depot or necessarily have to reinstall it.
The full version of Password Depot allows you to use any number of databases. At program start, the program offers the last opened database for opening. If you no longer remember the master password, click Cancel. This takes you to the main program. There you can create a new database via DB-Manager > New Database.