Hi, first, sorry for my pretty bad english.
I'm actually using the 2.6.1 version of Quests.

So, i have few problem, 3 exactly, and some are really frustating, because we have many players having this issue.

The first is that sometime, when player connect on the serv, their data file is reset, but only about the quests done, not the quests point, so, if they redo the quests, they double their point amount.

Second, sometime, if for example a player take a quests a day, if they complete some stage, but without completing the quest, the next day it may have reset their quests or go few stage back

Finally, this one is really weird too, if for example a npc (i use citizens with quest) ask to bring 8 diamond, for some player, it work, but for some other, the npc doesn't take the diamond, and it say he have no other quest available while the player still have the quests active.

It's like that since few month, please help ):