Recently I realised that I have 969 hand histories in my pokerstars folder that were not imported. If I try to import them manually it doesn't work. Those 969 hh represents a very very small portion of all the hands I played and were imported correctly from this same folder without any problem. So it doesn't make a big difference between my HEM winnings and my "true" winnings. I guess that's why it took me so long to realise that. But I still would like to understand what's wrong and how I can fix that.
Thanks