We have sent out the missing rewards from last week's Galactic Challenge this morning. Please check your inbox for a message containing the rewards you should have earned from completing the event the first time if you failed on your first attempt.
There was an additional issue (that we have now fixed) that was causing an erroneous message to be sent to those who were unaffected by the bug. Unfortunately, some players who received the correct rewards from the event have already received this message and may be confused why it contains with no rewards. Our apologies for confusing the issue further, those players should have already received all the rewards. We are investigating if there any other problems with the inbox message but it appears to be working correctly now.
Thank you for patience.