Hi , I don't have the 12 word recovery phase. I am 💯% sure that identifier and password is correct . Even when I am entering the details and trying to login , I get the approval mail. After Clicking it ,I get the SMS code on my phone. I enter the code and try to login. I get the Error Decrypting error msg. There is something wrong on the Block chain.info side.
Could you try to delete the history and cache of your browser and download a ccleaner and clean all your browser history and cache.
Restart your PC and restart your internet and re-login again.
If this didn't work the only possible could help recover your wallet is the blockchain support, but expect for delay response sometimes they reply 1 week before you can receive the email from blockchain support.