Thanks for the quick response @Graham Walsh
We did try Crestron support via our reseller but they weren't very helpful with these problems unfortunately.
But on the plus side we've created a new Android compliance policy so the devices now appear in TAC (our fault for using the existing policy for the Poly hardware, which is Android 8.1 and we needed an Android 9 policy as well)
We're on the correct firmware version you suggested, however once in the TAC we were prompted to update the Teams application on the Crestron and doing so fixed the issue of the booking schedule being one hour out compared to the actual time on the clock. Interesting that checking for an application update via the Crestron web interface it said it was already up to date, but not the case according to the TAC.
We still have the problem of the LED light bar not working. But I don't seem to be able to SSH onto the Crestron IP to try the POPPLUS command, and I can't see any obvious setting to enable/disable SSH??? Did you mean SSH onto the Crestron, or were you referring to the switch?
cheers
Andy