No "Join" button for Zoom Room meeting

Hello,

I have the following setup.

2x 65" Commercial Displays

1x Rally Bar

1x Logitech MK545 Wireless KB and Mouse

Have created Office 365 resource and assigned to Zoom Room. When we invite Zoom Room Resource to the meeting, there is no "Join" button to press when we enter the conference room. Any ideas?

Many thanks.