How can I re-invite a user who has not received or accepted their invitation?

You can resend an invite to users who have either not received their invite or are yet to accept their invitation.

You can do this action through Account Settings > Team Details. 

To do this, click on the ellipsis for the pending user, and choose "Re-invite" from the drop-down list. This will send a new invite to that user. 

Note

A user can be invited a maximum of 3 times, including their original invitation.