As per our skype conversation this afternoon, from the logs gathered by the then-SellerCenter development team (which is now defunct), we did not find any logs to give any significant information (on top of what have been discussed in the email chain) on Anonwat's activities in the SellerCenter.
I have said the same to Khun Sunny when I met him in Ho Chi Minh City on 30 October 2015.
According to the then SellerCenter development team, logs are showing: