Kinda sad no more learning alien language, this is what I got and guessed from what we saw:
Apaka: (?)/friendly?
Bumian: People from Bumi?
Kai: Water
Bumi: The planet
Rana: people from? (Example: Bumi Rana, Bumians)
Kuling: (?)/calling? (Just a guess from how similar it sounds)
Wi: (?)
Du: (?)...