How can I recover a blockchain.info wallet from a 17 word phrase? I have a wallet at blockchain.info which I've opened about 4 years ago.
Right now I cannot access it. It looks like the site is sending me a verification email, but sadly I don't know which address it uses.
If I use the "I've lost my 2FA Device" option, I have to enter my mail, but it keep telling me that the mail address is not correct (I've tried my main mail and 3 other mail addresses that I've used to use).
If I use the "I've lost my Wallet Password" option (although I have the password), I have to enter a 12 word phrase. I have a 17 word phrase and I've tried to use the first 12 words and the last 12 words, but no luck - I cannot even press the "continue" button.
I've contacted the site's support a few times but haven't got any answer at all.  

Is there a way for me to recover my wallet directly from the 17 word phrase?
Blockchain.info's legacy wallet phrase decryption is here:

https://blockchain.info/wallet/forgot-password