This is what they said to me: (and I've accepted to be placed on the wait-list)
The review of applications to the MSW Online Part-Time program for Fall 2023 is now complete and while we are unable to offer you admission, you are being contacted at this time to ask if you would be interested in being placed on the wait list. We ask that you do not contact us in regards to your “position” on the wait list.
If you are interested in being placed on the wait list, a response (accept or decline) to this email is required on or beforeFriday, July 14, 2023. If we do not receive a response your application will be closed.