Oh shit wait, this "densuj" is very familiar to me and is actually a friend of mine. I'll ask him IRL if he really sold the account.
EDIT:
Ok so the original owner of the account actually sent me a PM back in 2017 telling me that his account is hacked/lost. You can call me stupid but I kinda forgot it and he was also like just let go of it. Here's the PM from the original account owner:
-----BEGIN BITCOIN SIGNED MESSAGE-----
My account < densuj > has been hacked/lost. Please reset the email to < densuj88@gmail.com >. The current date is < 27-10-2017>.
-----BEGIN BITCOIN SIGNATURE-----
Version: Bitcoin-qt (1.0)
Address: 1DENSUJ1RRhPDpSrbMefX6WfR5z9gCkW2W
Gw2OxoZnj3DUk8mmTUeWZSqwqRbh9z7eR6BTs3o+EzTpGAQ2PZK0OPVM98VZC4JE0a/h51H2fvKI5V5Ax6HgAr4=
-----END BITCOIN SIGNATURE-----
I can see that the address is staked here:
https://bitcointalk.org/index.php?topic=996318.msg16410886#msg16410886I will ask the original account owner to post a newer signed message in Meta and see how it goes from there.