"this room is not available"

[Tom-Nko]

Model:G7500

Hardware Version: 7

Software Version: 4.3.0-406188

Zoom Rooms

Current Version:

6.1.2.5202

all of a sudden one of my rooms has "this room is not available" message on the screen. It can make calls just fine but it's freaking out my users 

anyway, I can get rid of this message on this system?