Pretty sure the Override Registration and Share Event ended on June 19, 2017 at 11:00 AM PDT.
However, if you were experiencing issues prior to that some people experienced similar issues to what you were describing.
At the best you will have to wait for a Volunteer Forum Moderator or a Forum Moderator to clear things up for you.
Those're the only three I recognized lol. Not sure if the 1st one is still censored.