Getting Pirate Silver coins has 2 ways mainly = 1. from completing event goals + 2. from Tower chests. As Tower chests are functioning properly
Just provide Common item Bronze Key(s) for compensation = 1 for 4 hours Delay. So that it barely affect you to unlock Mythic and complete all event goals in time.
Can you please inform at what Time this BUG will be fixed so that it is fair to all the players.