kangaroo plant

Question

The leaves of our plant have gone black at the tips.

Also the flowers are not changing colour as per information supplied.

Answer 1

Leaf blackening is common if the plant is under stress. If growing in an indoor environment or conditions that are not desirable.
This article will refresh you on the care requirements.

https://www.gardeningknowhow.com/houseplants/kangaroo-paws/kangaroo-paws-houseplant.htm