Hello, @zotten dree
If you cannot reset the email account password, you will need to contact LastPass Support to confirm your identity, and then we will confirm the IP/device trying to log in.
This will require you to start a new trial under the new email address so we can communicate securely (which it appears you have done already).
Pleaseuse the 'Request help' button within the Email Verification support article, and use the new LastPass account email address to create an email case.
Once the original login attempt (new IP/device) has been permitted by the system, you may then delete the new account.