Have you invited a person to your team but they didn't receive the email or the link no longer works.

 You can cancel the invite and send a new invite.

When viewing your team summary details, down next to the person who is invited, there is a status and an action cog.

Click the action cog 

Then click "Cancel Invitation"

To send the invitation again click the "Invite a Team Member" button to send a new invite.

Then complete their name and email details to send a new invite.

Please Note: an invite is specific to 1 person and can only be used once. So if someone forwards on the invite email and tells others to use the same invite link, it will not work correctly and cause an invalid link issue.