I wish I could say the same worked for me. I have followed the guide verbatim, and also ensured I granted admin consent to the enterprise app as well as the app registration. However, I still cannot for the life of me get a token. The closest I have gotten is getting redirected back to my end user portal. I am not seeing the green banner and going back into the email authentication config does not show the token tab as expected.
I know this is on the line between osTicket and a MS issue, so I am willing to open a ticket with MS if needed. Thank you for all your work on this.