[You gain reputation when] you associate accounts of two or more Stack Exchange network sites, and at least one of those accounts already has 200 or more reputation: +100 on each site (awarded a maximum of one time per site)
Why this user has
101 points on 3 accounts but no activity worth of 200 points on any site?
Did he delete one of his accounts where he had 200 points?
That would be the only explanation... but what is the answer?