HACKING OF OLD AND NOT UPDATED OURWORLD ACCOUNTS

So, I got hacked around 2 or 3wks ago already around 200mil worth or more idrk.
but before it happened, I was a part of a discord server of an ourworld forum and they made an announcement that people were getting hacked especially those made around 2010-2013. After having read the post, I didn't bother to change or update my password and enable my security question. After being offline for several days, I tried to go online on ourworld, and to my surprise, all my 25k flows were popped and im now on lvl 200, my 2.4k gems were on left with 40, at first I thought that was all the was taken, but as I checked my inventory, I've noticed that it also took my items worth 10mil++.

can anyone confirm this hacking? cause no one even actually knows my account, I havent used any vpn in 2 years after I got unbanned using puffin browser.
or will I ever know or locate who hacked me?
thank you!

It's probably a combo hacking thing, as they say? They stole info from other sites and used it to break into this one

yeah, it's kinda sad that I didn't secure my account as well.