It seems that the messages popping-up in the game did not update with your progress on the Quest and we're sorry about that. It's true that it's misleading and we'll try to make sure the messages are clearer next time. However, and as @MightyWolf confirmed, you should all have received the correct reward according to your achievements
If you haven't yet, please let us know your feedback on Quests right here and help our Studio help you
I thought I hadn’t received the Odus challenge as I never saw the original pop up with the quests needed to complete the challenge. I was happily surprised to get a notification this morning informing me that I had completed the Gold challenge along with the new Odus Eagle costume!!