I am sorry to hear that you have not received the boosters that you won in the "Space Race" event!! Can you please provide below details, so that I can inform the Community Manager to look into the issue!
I am playing on an iPad only. I log in using my Facebook account My user ID is #2330087114 The treasure chest popped up, opened to show 6 hrs color bombs, 6 hrs of something else and some other boosters. I clicked on claim, then saw that nothing had posted. Thank you for looking into this