NeoFlash Hat does not show data in module

[fermintm]

NEOFLASH.ino error. Not show data in module, only on display.
M5stickc and Neoflash module.

Other examples if they work

[Zontex]

Hi, I've just tested and it works fine, please make sure the following:

1. you burned the right image to M5Stick-C
2. in Arduino IDE you select the right board - M5Stick-C
3. make sure you use the right example: https://github.com/m5stack/M5-ProductExampleCodes/blob/master/Hat/neoflash-hat/Arduino/display_rainbow/display_rainbow.ino