And it's very unlikely you'll get anything from this but 0.66 is worth attempting to recover.
Did you use any 2 facter authentication by any chance? That'll also contain your I'd and mobile number on and account you had and link it back to you.
Nothing is locked, but to get the verified payout I would have to change the payout address and lower the payout treshold. This changes made in the account would have to be verified by email(that I could not access), or (in case of changing the account email) by signing a wallet message with the payout address registered with the mining pool account, for which I dont have wallet or private key.
I did not use 2-factor auth.
Did you use the new wallet for anything related to it? If you made a deposit from it you might be able to sign that address instead and get them to unlock it. If not, you're coins will be as good as lost, don't expect anything back. Keep going with their support though.