It is normal for bees, but aggravating for beekeepers. In the US, most cities require that you inspect your frames regularly for disease and pests, and you can't do that if they are all stuck together. I would suggest that you join a local bee club, and ask if somebody would be willing to come and help you inspect your hive and sort out the comb. There are usually ways of saving at least some of it, and although it will set your bees back a little bit, your climate is so mild, they should recover quickly.
Bees are often very defensive of their hive once they are established. However, you have a feral swarm, and it is possible that their genetics have drifted. I believe that there are some very good queen producers in Hawaii, so you may want to investigate re-queening. Again, I strongly suggest that you get help from a bee club member in doing this, because queens are pricey ($25 to $50+ each), and you don't want to make all of the mistakes that I have over the years!
I found this, but I don't know how active they are. At least you might get to talk to somebody relatively local:
In that situation, I would not put the Flow super on top. Only do it when all of the frames are drawn in the lower box, and at least least 80% full of food, brood and bees. If you give them too much space, they can have trouble defending it from pests.
Great attitude! Keep asking questions and we will all try to help you.