Short Answer: The invite was likely expired invitations expire in 7 days or revoked; click 'Return to login' and ask the inviter to send a new invitation.
PreRequisites
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Access to the original invitation email to confirm timing
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Contact details for the person who invited you if available
Steps
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When you see the message 'Oops! This invite link is no longer valid.', click 'Return to login'.
You are returned to the login page. -
Confirm the invitation expiration notice in the original email 'This invitation will expire in 7 days for security reasons.'
You verify whether the 7-day window has passed. -
Contact the person who invited you and request they send a new invite or request a new invite via any internal process they use.
Inviter sends a fresh invitation link. -
Use the new invite link promptly within 7 days to complete the join or sign-up flow.
New link works and allows you to join.
Troubleshooting
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Invite shows invalid even though the email is recent.
Likely Cause: Invite token may have been used already or accidentally revoked.
Action: Ask the inviter to re-send the invite or create a new invite token, then use the new link. -
Clicking the link returns you to login or logs you out.
Likely Cause: Session or browser issues.
Action: Click 'Return to login', sign in to the correct account, then have the inviter send a fresh link if needed.
Note: The invalid-link screen explicitly suggests requesting a new invite or contacting the inviter.