The L2Ascalor team has fixed some of the issues you shared with us:

Legacy of Insolence – the Papyrus drop has been fixed.
Buffer: 3rd class buffs can now be used without requiring a premium account.
Zero Hour rewards have been changed.
Skills Death Spike and Aura Flash have been fixed.
Raid bosses 50-80 lvl has been fixed.
Grand Bosses has been fixed.
Free teleports until 20 lvl has been fixed.