Hello, @Mark Bovenzi,
Welcome to the Microsoft Q&A platform!
Based on your description, I wanted to check with you first to make sure you can use the Get-Messagetrace command in PowerShell to trace emails. Below is a screenshot of what you can get if you enter this command and trace the email successfully.
If you don't get the response shown above, my guess is that there is a problem with your permissions, I suggest you remove them , re-add them and have a test again, here are the permissions needed to run the email tracking.
Please feel free to contact me if you have any queries. If my reply is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.
Best,
Alex Zhang