You can resend your invitation from the Manage Invitation page. We offer the option to resend to a single guest or you can resend to a group of guests. To resend to just one guest, click the Manage Guest gear symbol next to their name and select "Resend Invitation" from the dropdown menu.
To resend to a group of guests, click the "Email Guests" tab.
This will have the option to resend your invitation to multiple guests at once.