Motion Detection Greyed Out On 1 Light

[l3fty1]

Can someone tell me why one of my lights has motion detection greyed out? 

[ShayneS]

l3fty1,

Are all three of these lights connected through one Bridge? Do you have the rule set for this light under Mode > Arlo Bridge > Armed "for reference"  > Pencil Icon > Rules ( Pencil Icon ) > if the following "Arlo Security Light" detects motion (should be checked) > Then do the following Turn On Light (should be checked).