I checked on this game about 16 hours ago, and before that was 48 hours. Between the 48 hour check, I bought Alters up to 400. After the 48 hours, I return and didn't receive any dark knights. I figured it would be found and fixed, so after the next 16, I return and still no dark knights, but the progress bar did fill 1/3 from first check, now it regressed to 1/4 progress, and showing no gain of Dark Knights. Anyone else with this problem?