I'm doing the 'kill two giant lizard quest' on Oloke. I've done so repeatedly but the quest never completes. The quest giver never acknowledges that they have been killed.
I'm stuck at this part as well. I can't continue. This is the second time I've had to restart the main quest. Google turns up nothing on this game. I only just found this post now.
I don't know if this is fixed for you guys or not, but you should check the Interstellaria Community pages on Steam instead. Cheers!