The Neohex has 37 RGB LEDS and the headband has 118 RGB LEDs.
the range should be set to 155 as there are now 155 LEDs connected together.
They should also be connected as below
0_1655653766803_hex_cat.png

However, this many LED's will cause power issues and you will need to build a power booster cable as shown in this guide.

https://youtu.be/7MP_eG3U2So