Wilting clones usually come down to humidity, temperature, or damage to the cutting itself. In that order.
Humidity is the most common culprit. Cuttings can't pull water through their stems until roots form, so they rely entirely on leaf surface moisture. If your dome is below 70 percent humidity, they will wilt. Mist lightly, close the dome, and give it a few hours before panicking.
Temperature matters next. Below 65 degrees, rooting slows to a crawl. Above 82, you risk cooking the cutting or inviting mold inside the dome. A heat mat set to 75 to 80 degrees under the tray is usually the fix for a cold grow space.
If the cutting was taken from a weak mother, stored too long before planting, or cut with a dirty blade, it may never root no matter what you do. Soft, mushy stems mean rot. Black stems mean the cutting is done — pull it. The rule of thumb: cut fresh, use clean tools, dip in rooting hormone, and give it 14 days before giving up.