But the mnemonic phrase doesn't work
It shows 2 QR codes. one of the BTC address, the other of the old style 18 word mnemonic  phrase. I tried  the phrase in multiple wallets and tools online but it doesn't work. All the words belong tot he BIP 39 word list too. One of the words is duplicated, I wonder if that may be an issue.

Thought I had a lucky break from a stranger. I guess not