Each load request can retrieve up to the last 3200 retweets
All the "old" retweets are saved to our database, so you can load more than the Twitter API current limitation if you load every less-than 3200 retweets.
Sadly, the protected/private accounts cannot be retrieved from the Twitter API :(
In case you want to ensure that all the retweets were previously loaded, you can :
Schedule auto-load over time
Because of the limitation to load only the last 3200 RTs, you can schedule an auto-load of your retweets for the next days. Please be reasonable with this feature, do not program a load every 15 minutes for 30 days if the contest ends in less than 30 days and if it's not a huge contest.
Schedule an auto-load every :
Warning : This feature will be enhanced & optimized in a near future, so the previous schedules may be cancelled.