When you, as a shipper admin, invite a new user to register for your company, they receive an email, containing a link to confirm their registration. Since this link expires in 24 hours, you must resubmit it if the user does not confirm their email in time.
4. In the "User Status" tile, click on "Resend Invitation":
5. A pop-up window will ask you to confirm your choice:
6. A green info box will inform you that the invitation has been successfully resent and the status of the user will now be "Invited":