Confirm with your Company Admin that you are in the system and that your invitation was sent to the correct email address.
Check your inbox for an email with the Sender = notifications@mg.expandshare.com
If you do not see an email from notifications@mg.expandshare.com, check your SPAM or Junk folder, and do a search of your email account.
If you are unable to find the invite, please reach out to your Company Admin or to ExpandShare Support at support@expandshare.com.