What are you running the humidity at? It is my understanding that they can't drown in the egg until they do an internal pip.
I have read a bunch on here in the last few months and there is just a lot of information. It seems that everyone runs the humidity a little differently but I will tell you what worked for me, and believe me I am a newbie. But here goes. I ran it at 30-35% the first 18 days, and then 70% at lockdown. But I did raise it gradually starting on day 16. I have no idea if it made a difference or not, but it worked. I only turned the eggs 2x on weekdays and 4x on weekends because of my work schedule. I only candled on day 8 and day 18. I didn't have an auto turner, but I had one rigged where I didn't have to open the incubator to turn them. I had the eggs in egg cartons until lockdown, and then I laid them on their sides in cupcake wrappers. I don't think the wrappers helped hold them in place at all, but that was my hope. My temps ran about 98.5 -101, but I tried to keep them lower rather than higher. I have a home made incubator with a fan.
Hopefully others will give you some more ideas on what could be wrong. I am sorry that you are having so many problems. I also read that you need to make sure that your incubator is cleaned really well. I don't know what to use as I have not had to clean mine yet since it was just built.