Hi and welcome!
I just completed my first hatch with my Janoel12. I hatched 5 out of 6 eggs with zero complications (lost one egg at lockdown).
My first piece of advice, now that you’ve found the manual, is to throw out the manual. If you go by it, you may potentially drown your eggs. I believe it’s what contributed to my one loss. Get a separate thermometer/hygrometer reader, make sure it’s calibrated, and use it.
Next, look into dry incubation.
https://www.backyardchickens.com/ar...h-eggs-using-the-dry-incubation-method.47694/
I switched to a dry incubation about midway through and it saved my 5 eggs that hatched. I added some water right at hatch, but I’m not sure it was really needed. The chicks put off A LOT of moisture when they start hatching. I had condensation all the way up the side of the bator which in itself tells you the humidity is waaay high. But my 5 chicks hatched without incidence either way. I think this particular incubator holds moisture really well. I even cracked the lid while they were hatching to remove a damp sponge I had put in that wasn’t needed. They were just laying all over it after hatching!
Make sure you use the top tray for incubation and switch them to the lower tray for lockdown. One side of the tray has raised grooves, the auto turning tray goes in there. The tracks keep it in place. I didn’t figure this out till day 7

I was able to fit 6 of my big eggs in the tray. You can probably get more in if they’re smaller like Bantams. I was hatching Leghorn and Golden Comet crosses so they were big eggs! Make sure the little brass rod in the plastic wheel in the lid is securely in the slot on the tray handle. This is the turning mechanism. It will shift the tray back and forth and very slowly roll the eggs. It’s hard to see just looking but if you mark your eggs you’ll be able to notice.
At lockdown, I removed them from the tray, recandled, marked the bad one (I left it in just in case) and took out the upper tray and placed the eggs in the bottom tray. This gives the chicks more headroom when they hatch and allows a better view for you to see them.

I placed a piece of cheesecloth under the eggs, but again, wasn’t needed. After they first chick hatched they just kicked it into a wad. I honestly think they have better traction on the plastic tray itself. It’s a softer plastic and the holes are perfect size for them to rest their little beaks in while they’re taking a break after hatching. I had no issues with splay leg or anything.
It really is a good little incubator. I had a lot of fun using it. But the manual is worthless really. You’ll have better luck without it in my personal opinion. Like I said, it’s my first hatch with it, but that was my experience. Some on here have been using it for longer and may have corrections to what I’ve said
I hope this was a little helpful!
