The officers and members aliases are only available to members registered on your FTH website - the email is forwarded to their email address as registered on the website.
You should be able to use an individual officer alias eg vppr-xxxx@toastmastersclubs.org. If your contact-xxxx is enabled (a specific setting on your console that by default is disabled), email will go to all of your club contacts as set up for your Contact Us form on your FTH site. Note the "xxxx" in the address is a placeholder for your club number.
More information accessible from this document:
support.toastmastersclubs.org/doc/item/email-features-for-users