If you've forgotten the PIN you use to unlock the Sookasa app, click "Cancel" to close the PIN prompt. In order to create a new four-digit PIN for your device, you'll need to sign out of the app from Sookasa's app preferences and sign in again.
To sign out of the Sookasa app:
- Click on the Sookasa app in the toolbar of your computer
- Go to Preferences...
- Switch to the Account tab
- Click "Sign out"