Hi! I put in 15 eggs on Sunday. I couldn't help but candle a few, but I'm seeing some great stuff so far. This is Day 4/5 cusp. I have nothing to compare this incubator to, this is my first time, but it's not making my experience overly difficult. My humidity DOES fluctuate, but not super significantly. But it doesn't stay between 50-55 like the instructions say. I just refill it daily and try to stay consistent. I've seen some mixed information about humidity and how high or low it should be, so I'm trying not to worry about it.
Lastly, I just saw the post about the fan cover which freaked me out, so I think I'm gonna need to contact the company so they send me one, hopefully before hatching time. I hope this helps sort of!