by e rock » Thu Jun 28, 2012 1:33 am
Each person is only allowed to collect one per day. Once a person has collected their stone for the day, another person (you in this scenario) may send them a stone (to be collected tomorrow). Once a person has been sent a stone, they cannot be sent another one until they collect.
So either your friends have not collected their stones, or someone else is sending stones to them before you.
chaos /ˈkāäs/
Noun:
1. Complete disorder and confusion.
2. Behavior so unpredictable as to appear random, owing to great sensitivity to small changes in conditions.