Okay.. I had it happen a few times already to me and to many others too, this is really frustrating and without sense.. not only because of the 36 hours time wait to repeat the quest but especially because of the wasted guardian's favor..!
So please.. make it so that if there's a loss of connection during a leve it would not fail although the timer would still go on..

For example..: My game crashes.. the levequest continues without failing but the timer on it keeps going even in the meantime while I'm offline..

Sounds fair to me...