Grandstream GXP2170 Screen Saver not working!

[Anthony B-P]

Very Please with 3CX and function/look of the new Grandstream GXP2170's! However, the screensaver doesn't seem to kick in on most of the phones. I have tried changing the screensaver setting, re-saving, reprovisioning and rebooting, but still the phones are lit like Christmas trees! It would be great to solve this as it's my last snag. Please see my Christmas trees below.....