and yes this was from 2013 , and I used it until 2016 or 17 I believe .
Sadly, that type of wallet isn't recoverable through other wallets and all required private keys can't be extracted.
That's because it's actually a MultiSig wallet and the other cosigner key is in their custody.
I haven't used that 2013 version so I can't tell if there's a way to get access to the cosigner's key nor how their derive the correct keys.