I built a 4 LED Module and wired it to an arduino nano according to https://create.arduino.cc/projecthub/laserbrain/arduino-controlled-artificial-candle-lights-65a46d.
I tested the module with a modified example sketch and it works as it should i.e. all 4 LEDs could be addressed and programmed.
Then I compiled the atrium lighting and set both STRIP_x_MODULE_COUNT to 1.
The compilation gave no errors but the module does not get updated.
It still shows the pattern from the example sketch.
It seems that the data output to port 5 or 6 is just not sent.
Is there a hidden setting I need to do or some debugging hints to solve the issue?