Lots of lights, but nobody is home

Trying to set up general lighting right now for a 3D printer…

3 strips if SK6812-RGBW with 24 LEDs each.

For some bizarre reason, only the first 24 are working?!?!

I’ve checked for 5v at the end of the total 72 LEDs – All good
I’ve checked the continuity of the data wire from before LED 1 to the end of LED 72 – All good

Its not complex, but its kicking my ars! WTH am I doing wrong? First time with WWLED, but this can’t be this complex!

Any help would be greatly appreciated