My Ambient Lights aren't doing anything

Work through these in order:

1. Check the plugin is actually producing colour. Open Ambient Lights → Capture Settings and look at "Live output per light" at the bottom. If you see changing RGB numbers, DNR is working and the problem is downstream (steps 2 and 3).
2. Test the light from SimHub directly. In SimHub's own Ambient Lights page, use its built-in test/preview to flash your light. If it doesn't respond even there, it's a connection/pairing issue with the light itself (e.g. Hue bridge), not DNR.
3. Re-import the DNR light profile. In SimHub's Ambient Lights → Color effects, make sure the "Daniel Newman Racing - Ambient Lighting" profile is selected and up to date. Re-importing it fixes cases where an old profile stops the colours coming through.