That's a mystery. I have recently contacted with Royse777 regarding this and realized the scammer collects enough information/contacts before they try the scam. It was my surprise that scammer knew 3 of my contacts from shuffle and tried to scam all of them impersonating me.
I know one guy who asked for shuffle admin's telegram to solve an issue regarding casino. I haven't shared his tg with anyone else. Maybe he is doing all these, maybe not. I'm really in confusion.
I was talking to a well wisher who is following this scammer from long time. We are suspecting it's someone from TG inside. Otherwise there are no way for anyone to know what subject we are talking with each others and the scammer targets its victim precisely.
I checked my device history and could not find any suspicious login. My current device is safe (at least I think it is) from keylogger too. Mind it that it's not happening with you and me or only some others, there are many who are victim of the same scammer. It only means that someone from TG inside is doing all these targeted scamming.