I properly connected all boards by tutorial you have on your website, but unfortunately after connecting power via micro USB cable, no snowflakes are shining. After some digging with my voltmeter and continuity tester, I found that it’s caused by misplaced flat cable connector on power board (the smallest board).
GND and DATA line are seems somehow connected, but VCC line is disconnected between power board and first snowflake.
Any idea how to fix it? Unfortunately I don’t have hot air station so I can’t resolder the connector.