Hi Yuki,
Thank you for the feedback. Currently we do not allow users to change their emails. We understand that this might prove inconvenient but the SecureAPlus Portal has access to powerful features that we currently do not let users to freely change the email for security purposes.
We will be deliberating this for a potential change in the future but at the moment, please do send an email to secureaplus@secureage.com so our team can assist you with the changes.
We apologize for any inconvenience caused.