NOT BLOOMING: Some Hoyas take a couple years to start blooming, so be patient with your plant! You can increase the chances of a bloom by ensuring your plant has bright indirect light, and avoiding over-watering.
DROPPING LEAVES: If your Hoya is dropping squishy or yellow leaves you may be over-watering. Allow the soil to dry out almost completely between waterings, and test the soil moisture before watering again. If your Hoya is dropping crispy leaves you're likely under-watering. Give your Hoya a drink and test the soil moisture before watering again.