Sabrina - Some daylilies do take some time to settle in and start growing. Some take off the minute their roots hit the soil. I think most go into transplant shock for at least a month after being planted.
I have a mix of daylilies and all of my registered ones are currently in pots. Some have been in those posts almost a year because I am in the process of creating a new large raised bed. Some of those in pots are doing great, recovered from the transplanting quickly and even bloomed after I got them. Others are still sulking a year later. Every cultivar is different in how they respond to their transplant conditions. And they also respond to their growing environment. So if your soil is being improved (as it sounds like you are doing), you should see some success next year for sure. Sorry it wasn't sooner like THIS year.