This is the story. I left my previous Group because of Inactivity. I joined the most strongest group in the server with the blessing of my friend Hardrock. He recommeded me to the leader of Legion group. Everything is fine and I enjoy the new group they are active and helpful. Today I got a strange message from one of the seniors of that group. Refer to the screenshot below:

As per the screenshot I attached, The Senior Shinosuke ask me that weird question. And I'm wondering how did he know that I got packs from the mentioned date? Those packs came from my previous group which is so inactive that's why I keep on getting even I'm participating twice per week on GNW.

I wonder is my account *ed? I mean, how did they know that I got packs from specific dates? Someone please help me to secure my account. I worked hard for it.

Thank you.