ISC-027BW fan not turning back on after opening lid. Flashing red LED

Title pretty much says it all.

Fan is working great until I open the lid. The app will alert that the lid is open, as it should. Yet when I close the lid the fan refuses to turn back on and the red status LED flashes red.

I’ve let it drop from 150 Celcius down to 100 and it continues to flash and not turn on.

Am I missing something, doing something wrong, or is the unit and/or software faulty?

Thanks.