What is going on here? I use an HLG quantum board with two panels. I water 1 qt every 4-5 days. Soil is moist. We have a small fan and a bag of mushrooms that create CO2. Temp is around 75 degrees and I am not sure about humidity. We use Pot for Pot soil and system.
Put a dome over it. May be too late for the autoflower to ever do much.
If you haven’t done so already, contact A Pot for Pot at email@example.com . I’ve grown two plants with their soil/system, and I’ve found customer support to be very helpful.