I understand, on some levels that introduce new concepts and are super easy, the Boosters should be locked. But level 2051 is incredibly difficult, and it doesn’t even add anything new to the table! Am I missing something??
That's a new one to me. Every booster should be unlocked by level 92 which is when the party booster is unlocked. Maybe king have been making changes to that level and messed something up. Maybe support can look into it for you