Looks like the soil is too dry....maybe too much sunlight. Where is the plant located? Direct sun is hard on them also. I've had great success with mine on the front porch, that only receives filtered morning sun.

How often do you water them?

How much sunlight do they receive?

When you repotted them what type of soil did you plant them in? They like a sandy-type loam. Did you move the location of the pot?

Tammy in Indiana