so what this is saying is that the alleged, "hacker" buys three different blockland keys years apart and comes on to say his personal info at a random time.
It could be the chance that OP was going around asking for Client_Trolling, and once somebody gave him it (Loaded with spyware, no doubt), they took control of the RAT they distributed and used information they gathered from his computer, starting following him. The two other people may just be people in cahoots in on the stuff