I still can't manage Amazon S3 to work on my site. As I am new with Amazon S3 I thought I am doing something wrong with that account... but later I tried to set up JReviews and Amazon S3 working and it was successful. So I assume - my S3 account is OK, and there is some problems with EasySocial. Maybe there is something about Transfer limit, Storage path - EU Ireland, or Bucket path - I wrote bucket name in there.