Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I am unable to see the issue in question.
There are two, most likely, scenarios.
Overwatering and underwatering are two very common reasons why a fresh planting will fail. It is important to let the soil dry out down to an inch or two between waterings with a fresh planting. After the recovery period, you can usually start watering even less than that.
These articles will help: