Need to know what is going on my frangiapani

Question

Little pale grey flying things
Look almost triangular when still
Also
What’s all the white stuff?

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Answer 1

This sounds like whiteflies. There are several ways to get them under control.

https://www.gardeningknowhow.com/plant-problems/pests/insects/whitefly-control.htm

https://www.gardeningknowhow.com/ornamental/flowers/plumeria/pest-control-for-plumerias.htm