Are you trying to for an existing file?
In a testing environment, the password prevents unauthorized access to the master answer key embedded within the .pka file. cisco packet tracer activity wizard password
Keep a secure record of your passwords. Losing the password means you cannot edit your own labs later. Are you trying to for an existing file
Some users have found success by modifying the startup configuration or using the "Config" tab on specific devices to bypass CLI locks, though this doesn't always unlock the Wizard itself. cisco packet tracer activity wizard password