Emails to admin NOT sent, but emails to new user OK!!?!??!

I don't know what caused this but the new site I'm trying to build started behaving badly!
A new user registration:

The admin is supposed to moderate registrations (used to work fine).
The user receives the email to confirm his email address by clicking the link.
When the user confirms his email address he is presented with the message that his account will be reviewed before activated, as normal.
The problem is that NO EMAIL is sent to the admin of the site to let him know that he needs to moderate the registration.
The user status (in Joomla CB Users) is normal (showing that needs approval).

I have open the linux console with the live maillog and I see the emails to the new user normally sent. There is NO indication that emails are being sent to the site admin.

Debugging (full) shows no language parsing errors. It shows however several duplicate DB queries (many of them) as well the text below under "Untranslated Strings":

----
# JROOT/libraries/CBLib/CBLib/Cms/Joomla/Joomla3/CmsPermissions.php

AAG_BLOGGERS="Bloggers"
BLOGGERS="Bloggers"
COMMUNITY_MODERATION_VIEW="Moderation View"
GUEST="Guest"
PUBLIC="Public"
REGISTERED="Registered"
SPECIAL="Special"
SUPER_USERS="Users"

# JROOT/libraries/rokcommon/RokCommon/I18N/Joomla.php

DIRECTORY_S_DOES_NOT_EXIST_UNABLE_TO_ADD_TO_CLASS_LOADER="%s does not exist. Unable to add to Class Loader"
LOADING_CONTAINER_CONFIG_FILE_FOR_S_FROM_S="container config file for %s from %s"
REGISTERING_LIBRARY_PATH_S_FOR_S="library path %s for %s"
UNABLE_TO_FIND_REGISTERED_CONTAINER_CONFIG_FILE_S_AT_S="to find registered container config file %s at %s"
----


Any ideas what else to try? :sick:

Thank you

Ensure moderator notifications are enabled within CB > Configuration > Moderation. Also ensure your user meets the view access level configured for CB Moderators within CB > Configuration > Moderation. Next edit your moderator within CB > User Management and ensure they're configured to receive emails.