Is it hot as heck outside? Have you noticed the soil is moist but your plants are still wilting (and your pump still works)?
Depending on the temperature and sun exposure outside, your large leafy plants could wilt in order to protect themselves. It doesn’t meant that they are dying. In fact, your wilted plants will most likely bounce back when the sun starts to go down in the evenings.
We have had some extraordinarily large tomato plants in perfect soil conditions look as though they were wilting, but they were just going into heat shock to protect themselves and would bounce back every night.
However, if you do notice your plants are looking as though they need more water then you can adjust the watering settings with the U-GroIt Automated Garden controller on the front of the garden.