@Juji why not reintroduce the event with some limits? For example only for VIP players or only 60+ players. The problem is that too many people are bringing lvl 1 boxes with macro just to farm the event and lagging the server.
Change Fork price in NPC to 15 million adena and/or add Fork to L2store for 400ncoin.
That way people will only buy on their main chars and you will not see 2000 lvl 1 boxes on macro lagging/crashing the server.
Simple solution for event: delete all forks and changed NPC price for forks to 15 million adena. Only main chars will buy this to gain xp and have chance at rewards, it will not be worth buying on 100 lvl 1 chars like ppl are doing now.