Good News / Bad News (Unclaimed Payroll)

About two weeks ago I got an email from my mother. At first it looked like her mail had been hacked (again) as it was telling be about how I had unclaimed money and all I had to do to claim it was to go to missingmoney.com. So, to me this seems like too good to be true, money doesn't just show up, lol. So I was about to delete the email when at the very end of the email I see "your unclaimed payroll money boo". At this point I realized that my mother actually did send this herself because well how the heck would someone just sending spam using my mothers email know that she called me boo? So I click and it turns out to be legit.


Optional BS Details: Years ago I moved in with my boyfriend at the time and had to leave my job up here because it was a 2.5 hour commute. At the time I wasn't making enough money for it to really be worth it, so I quit and got a job at..... Petco. Yeah, I know, don't tell me about how crappy they are, I know. ANYWAYS, I only worked there for about two weeks or so, I had to quit because it was way too stressful for me. I have anxiety and I really have trouble interacting with people so putting me in a high traffic cashier position with people at me because I wont let them use expired coupons, NOT good. After multiple times breaking down crying I had to tell them I couldn't work there.

ANYWAYS, long story short I have $378.36 of unclaimed money. That's the good news. The bad news is that I don't have the proof they need for me to be able to claim it. (proof that you did reside at the reported address or proof that you did business with the reporting company)

It was my boyfriends house and it was years ago, I don't have any copies of bills that were sent to me there, and I certainly don't have anything from Petco to prove I worked there, sooooooo........ How do I get my money???

Anyone have any experience dealing with their states unclaimed property office?