This is my Hibiscus,

Hey guys,

i need help with the ID of this hibiscus...

also, i bought this recently. The soil looked really dry so i gave it a good drink. It was a really hot day today and I had the windows open to let in a nice breeze. It was not in direct sunlight, but in bright shade. I picked it up to examine it and its unopened green buds just dropped. IDK if this is a problem or not. Does it need a repot? I can see its roots in the holes at the bottom of the plastic pot. Please help, I am a beginner hibiscus grower!!