WELCOME! to the forum.!
Hang in there for more suggestions as to how to deal with your humidifier issue and best of luck with your CPAP therapy.
What machine do you have? There's no blue light on the Philips Respironics System One CPAP or humidifier.
ResScan does not work on Philips Respironics machines.
What does it say on the top of your machine near the power button and display?
Get the free SleepyHead software here
for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.