Agreed. I also don't follow Discord. What they should do is post any updates in the news section of the game itself (its really underused except for event updates). A good example would be Idol Wars Z. They not only post news, but also notify players when there's bug fixes and if there's any compensation for it.
But I think you should be happy that you actually got a 6-star (even if its not exactly your favourite), considering the fact that there's a 80% chance you will get a 5-star instead. Unless they suddenly decided to update the pool with a 50% chance to get a 6-star.........
Why do I always get rewards for different missions than you guys? I noticed the same thing during the Idol Wars crossover. My 5-star ticket is from "Abyss of the Flame Spirits". Pretty messed up it seems. I'm curious to know how they're gonna fix this.