Welcome to the Bunnings Workshop community @Shima. It's fantastic to have you join us and many thanks for your question.
Daylilies require a good 5 or 6 hours of sunlight exposure to provide the best blooms. So if it is not currently experiencing that length, you might like to move its location. They also have a relatively short blooming period of 1 to 5 weeks. It looks like you have had several blooms, both current and those that have already fallen off. If you're coming up to the 5-week mark, then you might not experience further buds.
What fertiliser have you been using? One that is high in nitrogen will produce plenty of green growth but won't encourage much flowering. You could try some potash to see if that encourages blooms.