If you use the add user mod with phpBB3 with new user registration disabled you may find it is not sending passwords in the user welcome email. To fix this, you’ll need to edit the language template for the user welcome email to include the password token.

You can find the tempate in language/en/emails. WIth user registration disabled, the one you want is user_welcome.txt. Use _inactive.txt or admin_welcome_inactive.txt as appropriate if you use those registration modes.

All you need to do is add “Password: {PASSWORD}” somewhere (the token is the important bit) and you’ll be set. You might need to clear your board’s cache by clicking the “clear cache” button on the main admin window.

I hope this helps you if you find yourself in the same puzzling predicament.