Blockchain.info fail. How to recover wallet using 12 word seed?

I have an old wallet from 2013 on blockchain.info with a little BTC in it. I login and am told to input 2nd password to 'upgrade' account...I cannot get past this. I put in my 2nd password, which I am told is incorrect....its not. I cannot proceed further. I try to recover wallet using 12 word seed....the 'continue' button stays inactive, so I cannot proceed. I am unable to go to the next screen to recover with my seed. How can I use the 12 word seed to recover the wallet, WITHOUT using blockchain.info? via /r/Bitcoin http://bit.ly/2md8win