Sometimes users lose access to the email account they used for their Cloud Assess account (e.g. they used their work email address but they have now changed employer).
If you remember your password you can sign in and follow the process for Changing your Email Address. Ensure that the new email address you wish to use is not already associated with another Cloud Assess account.
However, if you don't remember your password then it makes things a little more difficult as you can't follow the process for Resetting your Password because you no longer have access to your email account. Additionally, if your email address is unconfirmed, you may not receive the password reset link even if you regain access to your email account.
If this is the case, contact your Training Provider for assistance. For trial accounts, consider creating a new trial account with an email address you control and deactivating the old one to regain access.