Hello,
I lost access to my blockchain account but i have the backup passphrase, i have imported the address to a new wallet on a different blockchain account and it requests the private key inorder to use the funds. Please what can i do?
Since you have the passphrase, then there is nothing you can do but what I am surprised about is the fact that blockchain.info asking for private key when they don't provide one because everything they do is just the passphrase and I expect that you should have uncontrolled access since you have done that already.
However, there is a way to get the private key though an external way, I have not used it before but several others have used it so that's a disclaimer
https://bitcointalk.org/index.php?topic=1396233.msg15994971#msg15994971
