Group Inbox Stopped Showing Automated Emails

I read thru the admin guide and thru the support forum but am not finding (or, admittedly, not understanding) the answer. Here’s the issue:

We set up a group inbox (Directory-Admin) for me and another admin to receive emails from REDCap. In this case, when a change happens in a user record in a REDCap directory, it automatically triggers an email to our group inbox. This has worked flawlessly for almost a year.

Now, for some reason that I can’t figure out, I’m receiving the email notifications in my personal Outlook, but the notifications are no longer appearing online in the group inbox. I sent a test email from Outlook and it did appear in the group inbox. Also, I am not seeing any notifications in the drop-down admin menu on the upper right.

The only thing that has changed over the last year is the other admin left the organization (and is “suspended” in Discourse).

My settings

I am “Watching” the group inbox.

Here are my email preferences:

Here are my notifications settings:

Any ideas? Thanks!