I was using blockchain wallet for 2 years and everything was fine but 15 days ago they have some problems with there wallet.
I couldn`t login for 2 days after that they gave mi new address, i tried to import old address to use and they put it in watch only and now i can`t get my funds.
I most say that my comp crashed and i lost my private key.
Their support would not even hear me, said they can not help me and that's it.
Lately I also have trouble logging in using my alias in blockchain. I think they disabled it already. I have to use my identifier to be able to log in in my account. That might be causing your problem in your old walllet. Your identifier is found in your email.
I think it is a good thing they are not giving away private keys or seeds easily. The owner are the ones responsible in keeping the private keys safe, not the web wallet. If you lost it, sorry, but it is your responsibility.