OBTP not updating

When attempting to setup a Skype for Business meeting from a client inviting a Cisco DX80 endpoint it was not updating, having a look at the logs it seems like a Credentials error : 2018-06-19 13:34:19,401 [MeetingSynchronizerThread] INFO – Forcing update for endpoint dx80@alictrify.com. 2018-06-19 13:34:19,401 [MeetingSynchronizerThread] INFO – Sending out OBTP information to endpoint … More OBTP not updating