Use multiple adafruit neopixel shields

“So my question is that am I doing just wrong? ”

You are not giving us enough information.

What shield?

Show us a good schematic of your circuit.
Show us a good image of your wiring.
Give links to components.
Posting images:
https://forum.arduino.cc/index.php?topic=519037.0

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Attach your ‘complete’ sketch between code tags, use the </> icon in the posting menu.
[code]Paste your sketch here[/code]