The first thing to do is check that there is a pending invite for this employee. Check that the email or phone number are correct and if there is a typo, cancel the invite and send it again.
Select your employee
If you emailed the invite, have the employee do a search inside their email for "SINC" as this often finds the missing invite
If none of the above works, have the employee download "sinc time clock" from either the App Store or Play Store and Tap on > Sign Up
If they get to this screen, STOP. Send an email to firstname.lastname@example.org explaining that the employee did not receive their invite and you followed the steps in this guide. Include the email address the employee used and our support team will manually add them to your organization.