Im going to say this is an issue as well as the missing heros and everything else thats going on.
I find it somewhat humorous that people have been complaining they can't do certain events over the last 24 hours when there are a number of us who still haven't been able to download the prior update and haven't been able to do many events for nearly a month.
We apologize for the inconvenience caused, we already provide a gift pack in bazaar in the weekend, and we will provide another gift pack recently. Please kindly focus on the official news in game. Hope for your understanding.