The confirm page at /auth/confirm asks you to confirm you meant to open this email link. If the link is dead, it says "Link unavailable". When the link is valid, the title is "Continue to ReachyReach".
Confirm a valid link
Open the email ReachyReach sent.
Open the confirm link. It should land on /auth/confirm.
Read "Confirm you meant to open this email link."
Select Continue. The title above that line is "Continue to ReachyReach".
Use the same email you signed up with, or the email on a workspace invite. A different inbox cannot finish this confirm.
If the link is dead
When the link is missing details, the title is "Link unavailable". The line under it says "This sign-in link is missing details. Ask your admin to resend, or sign in."
Do not reuse an old confirm tab. Ask for a new signup code or a new invite. Invite unavailable on an accept page is a different message: that invite is expired, already used, or was sent to a different email address.