Blochchain security so much harder. In the case of lost wallet identifiers, or lost email access the secret phrase ultimately you lost your wallet access. Support team unable to help you re-gain access to your wallet if you've lost or forgotten your Wallet Recovery Phrase even the blockchain authority didn't save this. Next time be careful.
That's why having any kind of wallet mobile, web/online, desktop, hardware and even paper wallet, it's a must that you have to make a
backup or a copy offline on it , it's not an excuse that you forget backing up those very important files. But for the case of OP I guess the 17 passphrases he had is useless because of the new wallet update of blockchain.info so.. I will just watch this thread if someone can help him.