How to change the password for a protected category in WordPress
You can edit or delete the password(s) for a protected WordPress category as follows:
- Go to edit the category (e.g. via Posts → Categories, or the category page for your custom post type).
- On the ‘Edit category’ page, change the passwords in the ‘Visibility’ section. You can either edit or delete an existing password, or add additional passwords.
- Click ‘Update’.
Changing a password will reset it to the new one that you have entered, so you will need to give the new password to your users.