I created an Ethereum wallet 4 years ago, and bought some ether. At the time it was purely an experiment and I knew very little about crypto, I just wanted to see how to do it. I then forgot about it for some years, and recently thought I would look back at that old wallet. However, I could find the keystore but did not remember ever creating a password, so I resigned myself to never being able to access it again and wrote the ether off as lost.
But recently, I discovered a private key from exactly the same date the wallet was created, so I used that to access it. But the balance said zero ether. I checked it on etherscan and it also said zero, but it also has no transaction history.
What could be going on? Could I doing something wrong and somehow looking at the wrong wallet? I thought perhaps it had been hacked and the ether removed, but then shouldn't I be able to see the transaction history, which should at least contain the initial purchase of ether I made in 2016?
Thanks for any help. As I say, I have largely written off the ether as lost, but am curious to know what's going on and see if I can recover it.
The address in question is 0xa9A9aa61751Ad176f8E02694A0bD9Ed7e1A9C617