I have a report scheduled to run weekly with the following delivery options:

There are 3 recipients on this report. For 2 of these recipients, the report is successfully delivered with attachment. For the third recipient (a shared mailbox), the following occurs:

The report is obviously not empty as it is delivered to the other two recipients, and running the report manually returns results.
I also tried changing the delivery options to the following:

But the email is still not delivered to that third recipient.
Any thoughts?