No, I mean this. My friends who were at my house when I earned my earnings did not log in to that site, they did not block their accounts, they blocked my account. After talking to you here, I logged in to those accounts and looked at their entry and exit times, so it is obvious that it was not taken beforehand.
Won't hurt to show us here, though it probably didn't prove much. I am not sure how detailed session log that Coins have, but hopefully it includes the device details. Surely those accounts are accessed from different device? Or did you happen to lend your phone to them too during registration?