Don't send your seed words to anyone if you receive private message from someone offering help for solving your problem!
I am not using their web wallet for years, but you can try entering your 20 mnemonic words on blockchain recover wallet page, and if you have correct password you should be able to recover it.
https://login.blockchain.com/wallet/recover-walletYou can also write about your problem to dedicated Blockchain Twitter support, and they may respond quicker:
https://twitter.com/AskBlockchain but no luck as its shows your password which i already have. I just dont have access to attached mobile.
I try to contact on twitter.