Hi,
Delivery logs are synced asynchronously between enhanced MTA and Campaign instance.
Please wait for 2-3 days to see if any of these proofs broadlog get marked as failed.
If it doesn't then it would mean that the delivery was received correctly by the recipient domain MX server but due to some issue the MX server has not delivered it in Inbox.
Check with the MX domain administrator and check the recipient's SPAM folder.
Thanks,
Deepika