Zoom Room Host

When I create an invite for my coworkers to have a meeting in our conference room with internal and external employees, the meeting appears on our tablet in the conference room so I just need to hit "join" which has usually just started the meeting on the screen in the conference room but is now giving a message that it is "waiting for the host to join" and will not start the meeting until someone externally logs into the meeting but the original invite was created from the conference room calendar itself so should be the host already. Any ideas what is causing this?