Hi Kim, Sounds like you're doing everything right. How long have you had them planted? Is this your first time at planting daylily seeds?
The only thing that I can think of, did the root nubs dry out or turn brown before you planted them? I just plant mine in good soil and hope. I don't soak mine or let them germinate before putting them in the soil. It's taking forever for mine this year because I haven't heated the greenhouse this year. I planted 950 seeds from Jan 13 thru Jan 29 of this year and so far, I have only 266 up and growing. It took 18 days for the first seed to pop it's little green head up. Then 3 days later I have 13 more come up. I haven't really had any good days until the last two weeks when my weather got warmer and had several good sunshiny days that warmed the greenhouse up to in the 80s. I had 48 come up yesterday and it got up to 88 in the greenhouse yesterday and up to 84 the day before. So, I'm sure when I have more good warm days, I will have loads more come up.
I hope it's just taking time. One thing I have done when I just couldn't wait any longer to see if everything was ok, I very carefully dug several of my seeds out of the pots to see if they were growing. Again, very carefully so as not to break your root. I've done this on several cups and I found just good fat seeds setting in there wet soil and I also found several sprouting that just hadn't grown up and out of the soil. I also keep my soil just moist, not really wet. I water with a 2 gallon pump up sprayer so I don't disturb the seeds with too much water pressure.
All of this is strictly how I do things. I'm quite sure there are much better ways. We all have little things that we do different, so please, throw everything I say into a pile and pull out what you like and throw the rest away.
One more thing. Good soil and clean pots are also a must for me for seed starting.
Good luck and patience go a long way in growing daylilies from seed.
Blessings, Mona