Give roots room
Cryptocoryne plants are rooted plants that can create low cover around hardscape. Place them where their mature leaves will not block all the open space in a small aquarium.
Some crypts shed leaves after being moved or when conditions change. A temporary melt does not necessarily mean the plant is permanently lost.
Avoid chasing every leaf
Remove decaying leaves while leaving healthy roots undisturbed. Keep water quality steady and allow the plant time to adjust before relocating it again.
Shrimp can graze on surfaces around the plant, but do not use old or melting leaves as a reason to stop monitoring water quality.
For your own tank
When a crypt melts after planting, remove decaying leaves but keep the roots in place while you observe. Check whether the water and lighting changed at the same time. Replanting repeatedly can prolong adjustment and disturb shrimp grazing areas.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.