I had experienced a problem with training in the past (a few weeks ago). I made some players do a lot of training sessions. During the course of the some training sessions, it happened that connection was lost for whatever reasons (attempting to reconnect). After re-connection, what resulted: players lost condition, that is the condition they would be losing for the training drills they were asked to be done, but did not make any gains at all as showed in the training section and also in the training logs. So, many green packs were wasted. This happened enough times to indicate that this issue is significant and must be looked into.